20021013300 has 72 divisors (see below), whose sum is σ = 57952388032. Its totient is φ = 5336640000.

The previous prime is 20021013283. The next prime is 20021013307. The reversal of 20021013300 is 331012002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021013307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752220 + ... + 778380.

Almost surely, 2^20021013300 is an apocalyptic number.

20021013300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021013300 is an abundant number, since it is smaller than the sum of its proper divisors (37931374732).

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

20021013300 is a wasteful number, since it uses less digits than its factorization.

20021013300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28729 (or 28722 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20021013300 its reverse (331012002), we get a palindrome (20352025302).

The spelling of 20021013300 in words is "twenty billion, twenty-one million, thirteen thousand, three hundred".