20212799 has 2 divisors, whose sum is σ = 20212800. Its totient is φ = 20212798.

The previous prime is 20212771. The next prime is 20212807. The reversal of 20212799 is 99721202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212799 - 2²⁴ = 3435583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106399 + 10106400.

It is an arithmetic number, because the mean of its divisors is an integer number (10106400).

Almost surely, 2^20212799 is an apocalyptic number.

20212799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212799 is an equidigital number, since it uses as much as digits as its factorization.

20212799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 20212799 is about 4495.8646554361. The cubic root of 20212799 is about 272.4010762326.

The spelling of 20212799 in words is "twenty million, two hundred twelve thousand, seven hundred ninety-nine".