21012020103130 has 32 divisors (see below), whose sum is σ = 43565079269376. Its totient is φ = 7147395811584.

The previous prime is 21012020103073. The next prime is 21012020103161. The reversal of 21012020103130 is 3130102021012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181769519 + ... + 1181787298.

It is an arithmetic number, because the mean of its divisors is an integer number (1361408727168).

Almost surely, 2^{21012020103130} is an apocalyptic number.

21012020103130 is an abundant number, since it is smaller than the sum of its proper divisors (22553059166246).

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

21012020103130 is a wasteful number, since it uses less digits than its factorization.

21012020103130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363556958.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21012020103130 its reverse (3130102021012), we get a palindrome (24142122124142).

The spelling of 21012020103130 in words is "twenty-one trillion, twelve billion, twenty million, one hundred three thousand, one hundred thirty".