88109029121 has 2 divisors, whose sum is σ = 88109029122. Its totient is φ = 88109029120.

The previous prime is 88109029087. The next prime is 88109029163. The reversal of 88109029121 is 12192090188.

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., 71580327025 + 16528702096 = 267545^2 + 128564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88109029121 is a prime.

It is not a weakly prime, because it can be changed into another prime (88109029171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44054514560 + 44054514561.

It is an arithmetic number, because the mean of its divisors is an integer number (44054514561).

Almost surely, 2^88109029121 is an apocalyptic number.

It is an amenable number.

88109029121 is a deficient number, since it is larger than the sum of its proper divisors (1).

88109029121 is an equidigital number, since it uses as much as digits as its factorization.

88109029121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 88109029121 in words is "eighty-eight billion, one hundred nine million, twenty-nine thousand, one hundred twenty-one".