121210011120210 has 64 divisors (see below), whose sum is σ = 308028947472000. Its totient is φ = 30420060152832.

The previous prime is 121210011120119. The next prime is 121210011120271. The reversal of 121210011120210 is 12021110012121.

It is a happy number.

It is a super-2 number, since 2×121210011120210² (a number of 29 digits) contains 22 as substring.

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 121210011120210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7216176 + ... + 17160804.

It is an arithmetic number, because the mean of its divisors is an integer number (4812952304250).

Almost surely, 2^{121210011120210} is an apocalyptic number.

121210011120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121210011120210 is an abundant number, since it is smaller than the sum of its proper divisors (186818936351790).

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

121210011120210 is a wasteful number, since it uses less digits than its factorization.

121210011120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968555.

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

Adding to 121210011120210 its reverse (12021110012121), we get a palindrome (133231121132331).

The spelling of 121210011120210 in words is "one hundred twenty-one trillion, two hundred ten billion, eleven million, one hundred twenty thousand, two hundred ten".