1021220232312 has 32 divisors (see below), whose sum is σ = 2917772092800. Its totient is φ = 291777209184.

The previous prime is 1021220232251. The next prime is 1021220232353. The reversal of 1021220232312 is 2132320221201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 3039345762 + ... + 3039346097.

It is an arithmetic number, because the mean of its divisors is an integer number (91180377900).

Almost surely, 2^{1021220232312} is an apocalyptic number.

1021220232312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021220232312 is an abundant number, since it is smaller than the sum of its proper divisors (1896551860488).

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

1021220232312 is a wasteful number, since it uses less digits than its factorization.

1021220232312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6078691875 (or 6078691871 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1021220232312 its reverse (2132320221201), we get a palindrome (3153540453513).

The spelling of 1021220232312 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred thirty-two thousand, three hundred twelve".