20221504000 has 80 divisors (see below), whose sum is σ = 50423743656. Its totient is φ = 8088576000.

The previous prime is 20221503971. The next prime is 20221504013. The reversal of 20221504000 is 40512202.

It can be written as a sum of positive squares in 4 ways, for example, as 1537894656 + 18683609344 = 39216^2 + 136688^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93981 + ... + 221980.

Almost surely, 2^20221504000 is an apocalyptic number.

20221504000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221504000 is an abundant number, since it is smaller than the sum of its proper divisors (30202239656).

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

20221504000 is an frugal number, since it uses more digits than its factorization.

20221504000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315994 (or 315968 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The spelling of 20221504000 in words is "twenty billion, two hundred twenty-one million, five hundred four thousand".