1021010123100 has 144 divisors (see below), whose sum is σ = 3392294129280. Its totient is φ = 234490348800.

The previous prime is 1021010123083. The next prime is 1021010123123. The reversal of 1021010123100 is 13210101201.

It is a super-2 number, since 2×1021010123100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8079327 + ... + 8204726.

It is an arithmetic number, because the mean of its divisors is an integer number (23557598120).

Almost surely, 2^{1021010123100} is an apocalyptic number.

1021010123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021010123100 is an abundant number, since it is smaller than the sum of its proper divisors (2371284006180).

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

1021010123100 is a wasteful number, since it uses less digits than its factorization.

1021010123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16284100 (or 16284093 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1021010123100 its reverse (13210101201), we get a palindrome (1034220224301).

It can be divided in two parts, 10210101 and 23100, that added together give a palindrome (10233201).

The spelling of 1021010123100 in words is "one trillion, twenty-one billion, ten million, one hundred twenty-three thousand, one hundred".