220002207855817 has 2 divisors, whose sum is σ = 220002207855818. Its totient is φ = 220002207855816.

The previous prime is 220002207855809. The next prime is 220002207855853. The reversal of 220002207855817 is 718558702200022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201167814356496 + 18834393499321 = 14183364^2 + 4339861^2 .

It is a cyclic number.

It is not a de Polignac number, because 220002207855817 - 2³ = 220002207855809 is a prime.

It is a super-2 number, since 2×220002207855817² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220002207853817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110001103927908 + 110001103927909.

It is an arithmetic number, because the mean of its divisors is an integer number (110001103927909).

Almost surely, 2^{220002207855817} is an apocalyptic number.

It is an amenable number.

220002207855817 is a deficient number, since it is larger than the sum of its proper divisors (1).

220002207855817 is an equidigital number, since it uses as much as digits as its factorization.

220002207855817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1254400, while the sum is 49.

The spelling of 220002207855817 in words is "two hundred twenty trillion, two billion, two hundred seven million, eight hundred fifty-five thousand, eight hundred seventeen".