1021122111212 has 24 divisors (see below), whose sum is σ = 2043338191104. Its totient is φ = 437389340112.

The previous prime is 1021122111187. The next prime is 1021122111239. The reversal of 1021122111212 is 2121112211201.

It is a super-2 number, since 2×1021122111212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9714368 + ... + 9818919.

It is an arithmetic number, because the mean of its divisors is an integer number (85139091296).

Almost surely, 2^{1021122111212} is an apocalyptic number.

It is an amenable number.

1021122111212 is an abundant number, since it is smaller than the sum of its proper divisors (1022216079892).

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

1021122111212 is a wasteful number, since it uses less digits than its factorization.

1021122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19535165 (or 19535163 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1021122111212 its reverse (2121112211201), we get a palindrome (3142234322413).

The spelling of 1021122111212 in words is "one trillion, twenty-one billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".