20212937 has 2 divisors, whose sum is σ = 20212938. Its totient is φ = 20212936.

The previous prime is 20212931. The next prime is 20212991. The reversal of 20212937 is 73921202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18627856 + 1585081 = 4316^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212937 - 2²⁰ = 19164361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20212931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106468 + 10106469.

It is an arithmetic number, because the mean of its divisors is an integer number (10106469).

Almost surely, 2^20212937 is an apocalyptic number.

It is an amenable number.

20212937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212937 is an equidigital number, since it uses as much as digits as its factorization.

20212937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20212937 is about 4495.8800028471. The cubic root of 20212937 is about 272.4016961577.

The spelling of 20212937 in words is "twenty million, two hundred twelve thousand, nine hundred thirty-seven".