212402093 has 2 divisors, whose sum is σ = 212402094. Its totient is φ = 212402092.

The previous prime is 212402027. The next prime is 212402117. The reversal of 212402093 is 390204212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147792649 + 64609444 = 12157^2 + 8038^2 .

It is a cyclic number.

It is not a de Polignac number, because 212402093 - 2⁸ = 212401837 is a prime.

It is a super-2 number, since 2×212402093² = 90229298221561298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212402023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106201046 + 106201047.

It is an arithmetic number, because the mean of its divisors is an integer number (106201047).

Almost surely, 2^212402093 is an apocalyptic number.

It is an amenable number.

212402093 is a deficient number, since it is larger than the sum of its proper divisors (1).

212402093 is an equidigital number, since it uses as much as digits as its factorization.

212402093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 212402093 is about 14574.0211678178. The cubic root of 212402093 is about 596.6499345446.

The spelling of 212402093 in words is "two hundred twelve million, four hundred two thousand, ninety-three".