1021213233100 has 72 divisors (see below), whose sum is σ = 2346634805760. Its totient is φ = 384668665920.

The previous prime is 1021213233059. The next prime is 1021213233149. The reversal of 1021213233100 is 13323121201.

It is a super-2 number, since 2×1021213233100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 1291924 + ... + 1926523.

It is an arithmetic number, because the mean of its divisors is an integer number (32592150080).

Almost surely, 2^{1021213233100} is an apocalyptic number.

1021213233100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021213233100 is an abundant number, since it is smaller than the sum of its proper divisors (1325421572660).

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

1021213233100 is a wasteful number, since it uses less digits than its factorization.

1021213233100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218647 (or 3218640 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1021213233100 its reverse (13323121201), we get a palindrome (1034536354301).

The spelling of 1021213233100 in words is "one trillion, twenty-one billion, two hundred thirteen million, two hundred thirty-three thousand, one hundred".