1021232312100 has 864 divisors, whose sum is σ = 4414142643456. Its totient is φ = 190580428800.

The previous prime is 1021232312081. The next prime is 1021232312143. The reversal of 1021232312100 is 12132321201.

1021232312100 is a `hidden beast` number, since 1 + 0 + 21 + 232 + 312 + 100 = 666.

1021232312100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1021232312100² (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 an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 33317982 + ... + 33348618.

Almost surely, 2^{1021232312100} is an apocalyptic number.

1021232312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021232312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207071321728).

1021232312100 is an abundant number, since it is smaller than the sum of its proper divisors (3392910331356).

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

1021232312100 is a wasteful number, since it uses less digits than its factorization.

1021232312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725 (or 30715 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1021232312100 its reverse (12132321201), we get a palindrome (1033364633301).

The spelling of 1021232312100 in words is "one trillion, twenty-one billion, two hundred thirty-two million, three hundred twelve thousand, one hundred".