21313222020100 has 36 divisors (see below), whose sum is σ = 46314016963200. Its totient is φ = 8513431632160.

The previous prime is 21313222020091. The next prime is 21313222020109. The reversal of 21313222020100 is 102022231312.

It is an interprime number because it is at equal distance from previous prime (21313222020091) and next prime (21313222020109).

It is not an unprimeable number, because it can be changed into a prime (21313222020109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148142440 + ... + 148286239.

It is an arithmetic number, because the mean of its divisors is an integer number (1286500471200).

Almost surely, 2^{21313222020100} is an apocalyptic number.

21313222020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313222020100 is an abundant number, since it is smaller than the sum of its proper divisors (25000794943100).

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

21313222020100 is a wasteful number, since it uses less digits than its factorization.

21313222020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296429412 (or 296429405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21313222020100 its reverse (102022231312), we get a palindrome (21415244251412).

The spelling of 21313222020100 in words is "twenty-one trillion, three hundred thirteen billion, two hundred twenty-two million, twenty thousand, one hundred".