210213219971 has 2 divisors, whose sum is σ = 210213219972. Its totient is φ = 210213219970.

The previous prime is 210213219943. The next prime is 210213219989. The reversal of 210213219971 is 179912312012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210213219971 is a prime.

It is not a weakly prime, because it can be changed into another prime (210213209971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106609985 + 105106609986.

It is an arithmetic number, because the mean of its divisors is an integer number (105106609986).

Almost surely, 2^210213219971 is an apocalyptic number.

210213219971 is a deficient number, since it is larger than the sum of its proper divisors (1).

210213219971 is an equidigital number, since it uses as much as digits as its factorization.

210213219971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 210213219971 in words is "two hundred ten billion, two hundred thirteen million, two hundred nineteen thousand, nine hundred seventy-one".