21100313140220 has 24 divisors (see below), whose sum is σ = 46237207925664. Its totient is φ = 8073163288256.

The previous prime is 21100313140201. The next prime is 21100313140253. The reversal of 21100313140220 is 2204131300112.

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 = 21100313140192 and 21100313140201.

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, 22935122519 + ... + 22935123438.

It is an arithmetic number, because the mean of its divisors is an integer number (1926550330236).

Almost surely, 2^{21100313140220} is an apocalyptic number.

21100313140220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21100313140220 is an abundant number, since it is smaller than the sum of its proper divisors (25136894785444).

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

21100313140220 is a wasteful number, since it uses less digits than its factorization.

21100313140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45870245989 (or 45870245987 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21100313140220 its reverse (2204131300112), we get a palindrome (23304444440332).

The spelling of 21100313140220 in words is "twenty-one trillion, one hundred billion, three hundred thirteen million, one hundred forty thousand, two hundred twenty".