212973401 has 2 divisors, whose sum is σ = 212973402. Its totient is φ = 212973400.

The previous prime is 212973391. The next prime is 212973407. The reversal of 212973401 is 104379212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147379600 + 65593801 = 12140^2 + 8099^2 .

It is a cyclic number.

It is not a de Polignac number, because 212973401 - 2²² = 208779097 is a prime.

It is not a weakly prime, because it can be changed into another prime (212973407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106486700 + 106486701.

It is an arithmetic number, because the mean of its divisors is an integer number (106486701).

Almost surely, 2^212973401 is an apocalyptic number.

It is an amenable number.

212973401 is a deficient number, since it is larger than the sum of its proper divisors (1).

212973401 is an equidigital number, since it uses as much as digits as its factorization.

212973401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 212973401 is about 14593.6082241507. The cubic root of 212973401 is about 597.1844015281.

The spelling of 212973401 in words is "two hundred twelve million, nine hundred seventy-three thousand, four hundred one".