213020851 has 2 divisors, whose sum is σ = 213020852. Its totient is φ = 213020850.

The previous prime is 213020813. The next prime is 213020861. The reversal of 213020851 is 158020312.

213020851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213020851 - 2¹¹ = 213018803 is a prime.

It is not a weakly prime, because it can be changed into another prime (213020861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106510425 + 106510426.

It is an arithmetic number, because the mean of its divisors is an integer number (106510426).

Almost surely, 2^213020851 is an apocalyptic number.

213020851 is a deficient number, since it is larger than the sum of its proper divisors (1).

213020851 is an equidigital number, since it uses as much as digits as its factorization.

213020851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 213020851 is about 14595.2338453346. The cubic root of 213020851 is about 597.2287486869.

The spelling of 213020851 in words is "two hundred thirteen million, twenty thousand, eight hundred fifty-one".