121001211210 has 48 divisors (see below), whose sum is σ = 319203204768. Its totient is φ = 29333626080.

The previous prime is 121001211167. The next prime is 121001211241. The reversal of 121001211210 is 12112100121.

It is a super-2 number, since 2×121001211210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16663204 + ... + 16670463.

It is an arithmetic number, because the mean of its divisors is an integer number (6650066766).

Almost surely, 2^121001211210 is an apocalyptic number.

121001211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001211210 is an abundant number, since it is smaller than the sum of its proper divisors (198201993558).

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

121001211210 is a wasteful number, since it uses less digits than its factorization.

121001211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333699 (or 33333688 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121001211210 its reverse (12112100121), we get a palindrome (133113311331).

The spelling of 121001211210 in words is "one hundred twenty-one billion, one million, two hundred eleven thousand, two hundred ten".