21301031120 has 40 divisors (see below), whose sum is σ = 49542130440. Its totient is φ = 8517447680.

The previous prime is 21301031117. The next prime is 21301031149. The reversal of 21301031120 is 2113010312.

It can be written as a sum of positive squares in 4 ways, for example, as 30558784 + 21270472336 = 5528^2 + 145844^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 21301031095 and 21301031104.

It is a congruent number.

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, 192680 + ... + 282360.

It is an arithmetic number, because the mean of its divisors is an integer number (1238553261).

Almost surely, 2^21301031120 is an apocalyptic number.

21301031120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301031120 is an abundant number, since it is smaller than the sum of its proper divisors (28241099320).

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

21301031120 is a wasteful number, since it uses less digits than its factorization.

21301031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92663 (or 92657 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21301031120 its reverse (2113010312), we get a palindrome (23414041432).

The spelling of 21301031120 in words is "twenty-one billion, three hundred one million, thirty-one thousand, one hundred twenty".