20207252100 has 216 divisors, whose sum is σ = 68233736928. Its totient is φ = 4603737600.

The previous prime is 20207252089. The next prime is 20207252101. The reversal of 20207252100 is 125270202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20207252101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4863624 + ... + 4867776.

Almost surely, 2^20207252100 is an apocalyptic number.

20207252100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20207252100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34116868464).

20207252100 is an abundant number, since it is smaller than the sum of its proper divisors (48026484828).

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

20207252100 is a wasteful number, since it uses less digits than its factorization.

20207252100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515 (or 4501 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The spelling of 20207252100 in words is "twenty billion, two hundred seven million, two hundred fifty-two thousand, one hundred".