1023211122012 has 72 divisors (see below), whose sum is σ = 2723055426000. Its totient is φ = 323062795008.

The previous prime is 1023211121971. The next prime is 1023211122041. The reversal of 1023211122012 is 2102211123201.

1023211122012 is a `hidden beast` number, since 102 + 321 + 11 + 220 + 12 = 666.

It is a super-2 number, since 2×1023211122012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3872838 + ... + 4128594.

It is an arithmetic number, because the mean of its divisors is an integer number (37820214250).

Almost surely, 2^{1023211122012} is an apocalyptic number.

1023211122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1023211122012 is an abundant number, since it is smaller than the sum of its proper divisors (1699844303988).

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

1023211122012 is a wasteful number, since it uses less digits than its factorization.

1023211122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261635 (or 261630 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1023211122012 its reverse (2102211123201), we get a palindrome (3125422245213).

The spelling of 1023211122012 in words is "one trillion, twenty-three billion, two hundred eleven million, one hundred twenty-two thousand, twelve".