1021220112212 has 96 divisors (see below), whose sum is σ = 1971113356800. Its totient is φ = 461358689792.

The previous prime is 1021220112193. The next prime is 1021220112229. The reversal of 1021220112212 is 2122110221201.

It is a congruent number.

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, 50753978 + ... + 50774094.

It is an arithmetic number, because the mean of its divisors is an integer number (20532430800).

Almost surely, 2^{1021220112212} is an apocalyptic number.

It is an amenable number.

1021220112212 is a deficient number, since it is larger than the sum of its proper divisors (949893244588).

1021220112212 is a wasteful number, since it uses less digits than its factorization.

1021220112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20585 (or 20583 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021220112212 its reverse (2122110221201), we get a palindrome (3143330333413).

The spelling of 1021220112212 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred twelve thousand, two hundred twelve".