88121542981 has 2 divisors, whose sum is σ = 88121542982. Its totient is φ = 88121542980.

The previous prime is 88121542979. The next prime is 88121543039. The reversal of 88121542981 is 18924512188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88060562500 + 60980481 = 296750^2 + 7809^2 .

It is a cyclic number.

It is not a de Polignac number, because 88121542981 - 2¹ = 88121542979 is a prime.

It is a super-2 number, since 2×88121542981² (a number of 23 digits) contains 22 as substring.

Together with 88121542979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88121542931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44060771490 + 44060771491.

It is an arithmetic number, because the mean of its divisors is an integer number (44060771491).

Almost surely, 2^88121542981 is an apocalyptic number.

It is an amenable number.

88121542981 is a deficient number, since it is larger than the sum of its proper divisors (1).

88121542981 is an equidigital number, since it uses as much as digits as its factorization.

88121542981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 49.

The spelling of 88121542981 in words is "eighty-eight billion, one hundred twenty-one million, five hundred forty-two thousand, nine hundred eighty-one".