20212009975 has 12 divisors (see below), whose sum is σ = 25119996880. Its totient is φ = 16132766400.

The previous prime is 20212009963. The next prime is 20212009991. The reversal of 20212009975 is 57990021202.

It is not a de Polignac number, because 20212009975 - 2¹⁵ = 20211977207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909846 + ... + 931795.

Almost surely, 2^20212009975 is an apocalyptic number.

20212009975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20212009975 is a deficient number, since it is larger than the sum of its proper divisors (4907986905).

20212009975 is a wasteful number, since it uses less digits than its factorization.

20212009975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842090 (or 1842085 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 20212009975 in words is "twenty billion, two hundred twelve million, nine thousand, nine hundred seventy-five".