12121011210 has 64 divisors (see below), whose sum is σ = 36268591104. Its totient is φ = 2518651200.

The previous prime is 12121011173. The next prime is 12121011223. The reversal of 12121011210 is 1211012121.

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, 2621286 + ... + 2625905.

It is an arithmetic number, because the mean of its divisors is an integer number (566696736).

Almost surely, 2^12121011210 is an apocalyptic number.

12121011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121011210 is an abundant number, since it is smaller than the sum of its proper divisors (24147579894).

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

12121011210 is a wasteful number, since it uses less digits than its factorization.

12121011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247219.

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

Adding to 12121011210 its reverse (1211012121), we get a palindrome (13332023331).

The spelling of 12121011210 in words is "twelve billion, one hundred twenty-one million, eleven thousand, two hundred ten".