21020311103000 has 128 divisors (see below), whose sum is σ = 53661654446400. Its totient is φ = 7643388672000.

The previous prime is 21020311102997. The next prime is 21020311103003. The reversal of 21020311103000 is 30111302012.

It is an interprime number because it is at equal distance from previous prime (21020311102997) and next prime (21020311103003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020311103003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373938896 + ... + 373995104.

Almost surely, 2^{21020311103000} is an apocalyptic number.

21020311103000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020311103000 is an abundant number, since it is smaller than the sum of its proper divisors (32641343343400).

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

21020311103000 is a wasteful number, since it uses less digits than its factorization.

21020311103000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90238 (or 90224 counting only the distinct ones).

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

Adding to 21020311103000 its reverse (30111302012), we get a palindrome (21050422405012).

The spelling of 21020311103000 in words is "twenty-one trillion, twenty billion, three hundred eleven million, one hundred three thousand".