21021030301120 has 56 divisors (see below), whose sum is σ = 50078706653664. Its totient is φ = 8404653044736.

The previous prime is 21021030301067. The next prime is 21021030301129. The reversal of 21021030301120 is 2110303012012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21021030301094 and 21021030301103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021030301129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13966932 + ... + 15398611.

Almost surely, 2^{21021030301120} is an apocalyptic number.

21021030301120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21021030301120 is an abundant number, since it is smaller than the sum of its proper divisors (29057676352544).

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

21021030301120 is a wasteful number, since it uses less digits than its factorization.

21021030301120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29367797 (or 29367787 counting only the distinct ones).

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

Adding to 21021030301120 its reverse (2110303012012), we get a palindrome (23131333313132).

The spelling of 21021030301120 in words is "twenty-one trillion, twenty-one billion, thirty million, three hundred one thousand, one hundred twenty".