21023130113020 has 48 divisors (see below), whose sum is σ = 51146683697088. Its totient is φ = 7109191549440.

The previous prime is 21023130113003. The next prime is 21023130113021. The reversal of 21023130113020 is 2031103132012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21023130113021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1028518651 + ... + 1028539090.

It is an arithmetic number, because the mean of its divisors is an integer number (1065555910356).

Almost surely, 2^{21023130113020} is an apocalyptic number.

21023130113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21023130113020 is an abundant number, since it is smaller than the sum of its proper divisors (30123553584068).

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

21023130113020 is a wasteful number, since it uses less digits than its factorization.

21023130113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057057830 (or 2057057828 counting only the distinct ones).

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

Adding to 21023130113020 its reverse (2031103132012), we get a palindrome (23054233245032).

The spelling of 21023130113020 in words is "twenty-one trillion, twenty-three billion, one hundred thirty million, one hundred thirteen thousand, twenty".