12221020100212 has 48 divisors (see below), whose sum is σ = 26928044357760. Its totient is φ = 4714293456000.

The previous prime is 12221020100171. The next prime is 12221020100273. The reversal of 12221020100212 is 21200102012221.

It is a happy number.

It is a congruent number.

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, 196397787 + ... + 196460002.

It is an arithmetic number, because the mean of its divisors is an integer number (561000924120).

Almost surely, 2^{12221020100212} is an apocalyptic number.

It is an amenable number.

12221020100212 is an abundant number, since it is smaller than the sum of its proper divisors (14707024257548).

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

12221020100212 is a wasteful number, since it uses less digits than its factorization.

12221020100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392857912 (or 392857910 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221020100212 its reverse (21200102012221), we get a palindrome (33421122112433).

The spelling of 12221020100212 in words is "twelve trillion, two hundred twenty-one billion, twenty million, one hundred thousand, two hundred twelve".