213012901 has 2 divisors, whose sum is σ = 213012902. Its totient is φ = 213012900.

The previous prime is 213012881. The next prime is 213012931. The reversal of 213012901 is 109210312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197402500 + 15610401 = 14050^2 + 3951^2 .

It is a cyclic number.

It is not a de Polignac number, because 213012901 - 2⁷ = 213012773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213012931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106506450 + 106506451.

It is an arithmetic number, because the mean of its divisors is an integer number (106506451).

Almost surely, 2^213012901 is an apocalyptic number.

It is an amenable number.

213012901 is a deficient number, since it is larger than the sum of its proper divisors (1).

213012901 is an equidigital number, since it uses as much as digits as its factorization.

213012901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 213012901 is about 14594.9614936114. The cubic root of 213012901 is about 597.2213190110.

The spelling of 213012901 in words is "two hundred thirteen million, twelve thousand, nine hundred one".