20212913 has 8 divisors (see below), whose sum is σ = 23897280. Its totient is φ = 16727760.

The previous prime is 20212909. The next prime is 20212931. The reversal of 20212913 is 31921202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20212913 - 2² = 20212909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49583 + ... + 49988.

It is an arithmetic number, because the mean of its divisors is an integer number (2987160).

Almost surely, 2^20212913 is an apocalyptic number.

It is an amenable number.

20212913 is a deficient number, since it is larger than the sum of its proper divisors (3684367).

20212913 is an equidigital number, since it uses as much as digits as its factorization.

20212913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99607.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 20212913 is about 4495.8773337359. The cubic root of 20212913 is about 272.4015883448.

The spelling of 20212913 in words is "twenty million, two hundred twelve thousand, nine hundred thirteen".