220499999999291 has 2 divisors, whose sum is σ = 220499999999292. Its totient is φ = 220499999999290.

The previous prime is 220499999999287. The next prime is 220499999999341. The reversal of 220499999999291 is 192999999994022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220499999999291 - 2² = 220499999999287 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220499999999291.

It is not a weakly prime, because it can be changed into another prime (220499999999221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110249999999645 + 110249999999646.

It is an arithmetic number, because the mean of its divisors is an integer number (110249999999646).

Almost surely, 2^{220499999999291} is an apocalyptic number.

220499999999291 is a deficient number, since it is larger than the sum of its proper divisors (1).

220499999999291 is an equidigital number, since it uses as much as digits as its factorization.

220499999999291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12397455648, while the sum is 92.

The spelling of 220499999999291 in words is "two hundred twenty trillion, four hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, two hundred ninety-one".