1222212021112 has 32 divisors (see below), whose sum is σ = 2293694282880. Its totient is φ = 610560447840.

The previous prime is 1222212021031. The next prime is 1222212021133. The reversal of 1222212021112 is 2111202122221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222212021112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50864733 + ... + 50888755.

It is an arithmetic number, because the mean of its divisors is an integer number (71677946340).

Almost surely, 2^{1222212021112} is an apocalyptic number.

It is an amenable number.

1222212021112 is a deficient number, since it is larger than the sum of its proper divisors (1071482261768).

1222212021112 is a wasteful number, since it uses less digits than its factorization.

1222212021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29443 (or 29439 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222212021112 its reverse (2111202122221), we get a palindrome (3333414143333).

The spelling of 1222212021112 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, twenty-one thousand, one hundred twelve".