21233013102020 has 24 divisors (see below), whose sum is σ = 44590039351704. Its totient is φ = 8493069652736.

The previous prime is 21233013101999. The next prime is 21233013102043. The reversal of 21233013102020 is 2020131033212.

It can be written as a sum of positive squares in 4 ways, for example, as 2012715364804 + 19220297737216 = 1418702^2 + 4384096^2 .

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 = 21233013101983 and 21233013102001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7185359 + ... + 9700278.

It is an arithmetic number, because the mean of its divisors is an integer number (1857918306321).

Almost surely, 2^{21233013102020} is an apocalyptic number.

21233013102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233013102020 is an abundant number, since it is smaller than the sum of its proper divisors (23357026249684).

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

21233013102020 is a wasteful number, since it uses less digits than its factorization.

21233013102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16948519 (or 16948517 counting only the distinct ones).

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

Adding to 21233013102020 its reverse (2020131033212), we get a palindrome (23253144135232).

The spelling of 21233013102020 in words is "twenty-one trillion, two hundred thirty-three billion, thirteen million, one hundred two thousand, twenty".