20212373 has 2 divisors, whose sum is σ = 20212374. Its totient is φ = 20212372.

The previous prime is 20212327. The next prime is 20212393. The reversal of 20212373 is 37321202.

It is an a-pointer prime, because the next prime (20212393) can be obtained adding 20212373 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13126129 + 7086244 = 3623^2 + 2662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212373 - 2⁸ = 20212117 is a prime.

It is a super-2 number, since 2×20212373² = 817080044582258, which contains 22 as substring.

It is equal to p_1283231 and since 20212373 and 1283231 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106186 + 10106187.

It is an arithmetic number, because the mean of its divisors is an integer number (10106187).

Almost surely, 2^20212373 is an apocalyptic number.

It is an amenable number.

20212373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212373 is an equidigital number, since it uses as much as digits as its factorization.

20212373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20212373 is about 4495.8172783155. The cubic root of 20212373 is about 272.3991625330.

Adding to 20212373 its reverse (37321202), we get a palindrome (57533575).

The spelling of 20212373 in words is "twenty million, two hundred twelve thousand, three hundred seventy-three".