12211021021210 has 64 divisors (see below), whose sum is σ = 24879736341504. Its totient is φ = 4274868326400.

The previous prime is 12211021021187. The next prime is 12211021021229. The reversal of 12211021021210 is 1212012011221.

It is a super-2 number, since 2×12211021021210² (a number of 27 digits) contains 22 as substring.

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, 8618929 + ... + 9935188.

It is an arithmetic number, because the mean of its divisors is an integer number (388745880336).

Almost surely, 2^{12211021021210} is an apocalyptic number.

12211021021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211021021210 is an abundant number, since it is smaller than the sum of its proper divisors (12668715320294).

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

12211021021210 is a wasteful number, since it uses less digits than its factorization.

12211021021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18554359.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211021021210 its reverse (1212012011221), we get a palindrome (13423033032431).

The spelling of 12211021021210 in words is "twelve trillion, two hundred eleven billion, twenty-one million, twenty-one thousand, two hundred ten".