12210121210 has 32 divisors (see below), whose sum is σ = 25340262912. Its totient is φ = 4149277440.

The previous prime is 12210121199. The next prime is 12210121229. The reversal of 12210121210 is 1212101221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763906 + ... + 779725.

It is an arithmetic number, because the mean of its divisors is an integer number (791883216).

Almost surely, 2^12210121210 is an apocalyptic number.

12210121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210121210 is an abundant number, since it is smaller than the sum of its proper divisors (13130141702).

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

12210121210 is a wasteful number, since it uses less digits than its factorization.

12210121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543758.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12210121210 its reverse (1212101221), we get a palindrome (13422222431).

The spelling of 12210121210 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred ten".