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121101010212210 = 235719647206322739
BaseRepresentation
bin11011100010010000000110…
…101100100001010101110010
3120212210010212121201220022020
4123202100012230201111302
5111333104332103242320
61105321011442452310
734336154632444620
oct3342200654412562
9525703777656266
10121101010212210
113564a717193626
12116ba22b364096
135275a125a9442
1421c946a782510
15e001adb53940
hex6e2406b21572

121101010212210 has 256 divisors, whose sum is σ = 350370584985600. Its totient is φ = 26169003396864.

The previous prime is 121101010212173. The next prime is 121101010212233. The reversal of 121101010212210 is 12212010101121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121101010212210.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5325685021 + ... + 5325707759.

It is an arithmetic number, because the mean of its divisors is an integer number (1368635097600).

Almost surely, 2121101010212210 is an apocalyptic number.

121101010212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121101010212210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175185292492800).

121101010212210 is an abundant number, since it is smaller than the sum of its proper divisors (229269574773390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121101010212210 is a wasteful number, since it uses less digits than its factorization.

121101010212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25485.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121101010212210 its reverse (12212010101121), we get a palindrome (133313020313331).

The spelling of 121101010212210 in words is "one hundred twenty-one trillion, one hundred one billion, ten million, two hundred twelve thousand, two hundred ten".