20301002100 has 54 divisors (see below), whose sum is σ = 63632366070. Its totient is φ = 5413600320.

The previous prime is 20301002063. The next prime is 20301002107. The reversal of 20301002100 is 120010302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3126375396 + 17174626704 = 55914^2 + 131052^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301002107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11277435 + ... + 11279234.

Almost surely, 2^20301002100 is an apocalyptic number.

20301002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301002100 is an abundant number, since it is smaller than the sum of its proper divisors (43331363970).

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

20301002100 is a wasteful number, since it uses less digits than its factorization.

20301002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22556689 (or 22556679 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20301002100 its reverse (120010302), we get a palindrome (20421012402).

The spelling of 20301002100 in words is "twenty billion, three hundred one million, two thousand, one hundred".