21000122020300 has 36 divisors (see below), whose sum is σ = 45583319183976. Its totient is φ = 8397642467200.

The previous prime is 21000122020291. The next prime is 21000122020307. The reversal of 21000122020300 is 302022100012.

It is a super-2 number, since 2×21000122020300² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21000122020307) 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, 29728417 + ... + 30426616.

It is an arithmetic number, because the mean of its divisors is an integer number (1266203310666).

Almost surely, 2^{21000122020300} is an apocalyptic number.

21000122020300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000122020300 is an abundant number, since it is smaller than the sum of its proper divisors (24583197163676).

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

21000122020300 is a wasteful number, since it uses less digits than its factorization.

21000122020300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60158538 (or 60158531 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21000122020300 its reverse (302022100012), we get a palindrome (21302144120312).

The spelling of 21000122020300 in words is "twenty-one trillion, one hundred twenty-two million, twenty thousand, three hundred".