21022020120300 has 72 divisors (see below), whose sum is σ = 62785766787072. Its totient is φ = 5425037448000.

The previous prime is 21022020120251. The next prime is 21022020120313. The reversal of 21022020120300 is 302102022012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21022020120300.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1130206836 + ... + 1130225435.

Almost surely, 2^{21022020120300} is an apocalyptic number.

21022020120300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022020120300 is an abundant number, since it is smaller than the sum of its proper divisors (41763746666772).

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

21022020120300 is a wasteful number, since it uses less digits than its factorization.

21022020120300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260432319 (or 2260432312 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21022020120300 its reverse (302102022012), we get a palindrome (21324122142312).

The spelling of 21022020120300 in words is "twenty-one trillion, twenty-two billion, twenty million, one hundred twenty thousand, three hundred".