220210006391 has 2 divisors, whose sum is σ = 220210006392. Its totient is φ = 220210006390.

The previous prime is 220210006349. The next prime is 220210006409. The reversal of 220210006391 is 193600012022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220210006391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220210006391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220210006591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110105003195 + 110105003196.

It is an arithmetic number, because the mean of its divisors is an integer number (110105003196).

Almost surely, 2^220210006391 is an apocalyptic number.

220210006391 is a deficient number, since it is larger than the sum of its proper divisors (1).

220210006391 is an equidigital number, since it uses as much as digits as its factorization.

220210006391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 220210006391 in words is "two hundred twenty billion, two hundred ten million, six thousand, three hundred ninety-one".