52221116203981 has 2 divisors, whose sum is σ = 52221116203982. Its totient is φ = 52221116203980.

The previous prime is 52221116203961. The next prime is 52221116204041. The reversal of 52221116203981 is 18930261112225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44446688917225 + 7774427286756 = 6666835^2 + 2788266^2 .

It is a cyclic number.

It is not a de Polignac number, because 52221116203981 - 2⁹ = 52221116203469 is a prime.

It is a super-2 number, since 2×52221116203981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221116203931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110558101990 + 26110558101991.

It is an arithmetic number, because the mean of its divisors is an integer number (26110558101991).

Almost surely, 2^{52221116203981} is an apocalyptic number.

It is an amenable number.

52221116203981 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221116203981 is an equidigital number, since it uses as much as digits as its factorization.

52221116203981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 52221116203981 in words is "fifty-two trillion, two hundred twenty-one billion, one hundred sixteen million, two hundred three thousand, nine hundred eighty-one".