21302011233020 has 48 divisors (see below), whose sum is σ = 51125293567488. Its totient is φ = 7303480050240.

The previous prime is 21302011232941. The next prime is 21302011233029. The reversal of 21302011233020 is 2033211020312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21302011232983 and 21302011233001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302011233029) 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, 16154825 + ... + 17423615.

It is an arithmetic number, because the mean of its divisors is an integer number (1065110282656).

Almost surely, 2^{21302011233020} is an apocalyptic number.

21302011233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302011233020 is an abundant number, since it is smaller than the sum of its proper divisors (29823282334468).

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

21302011233020 is a wasteful number, since it uses less digits than its factorization.

21302011233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388730 (or 1388728 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21302011233020 its reverse (2033211020312), we get a palindrome (23335222253332).

The spelling of 21302011233020 in words is "twenty-one trillion, three hundred two billion, eleven million, two hundred thirty-three thousand, twenty".