121001022220212 has 36 divisors (see below), whose sum is σ = 305865686389536. Its totient is φ = 40333411480080.

The previous prime is 121001022220171. The next prime is 121001022220223. The reversal of 121001022220212 is 212022220100121.

It is a happy number.

121001022220212 is a `hidden beast` number, since 1 + 210 + 0 + 1 + 0 + 22 + 220 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5295168 + ... + 16432919.

It is an arithmetic number, because the mean of its divisors is an integer number (8496269066376).

Almost surely, 2^{121001022220212} is an apocalyptic number.

121001022220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121001022220212 is an abundant number, since it is smaller than the sum of its proper divisors (184864664169324).

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

121001022220212 is a wasteful number, since it uses less digits than its factorization.

121001022220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21882788 (or 21882783 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121001022220212 its reverse (212022220100121), we get a palindrome (333023242320333).

The spelling of 121001022220212 in words is "one hundred twenty-one trillion, one billion, twenty-two million, two hundred twenty thousand, two hundred twelve".