88120121 has 2 divisors, whose sum is σ = 88120122. Its totient is φ = 88120120.

The previous prime is 88120117. The next prime is 88120139. The reversal of 88120121 is 12102188.

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., 83978896 + 4141225 = 9164^2 + 2035^2 .

It is a cyclic number.

It is not a de Polignac number, because 88120121 - 2² = 88120117 is a prime.

It is not a weakly prime, because it can be changed into another prime (88120621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44060060 + 44060061.

It is an arithmetic number, because the mean of its divisors is an integer number (44060061).

Almost surely, 2^88120121 is an apocalyptic number.

It is an amenable number.

88120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

88120121 is an equidigital number, since it uses as much as digits as its factorization.

88120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 88120121 is about 9387.2318070878. The cubic root of 88120121 is about 444.9983099713.

The spelling of 88120121 in words is "eighty-eight million, one hundred twenty thousand, one hundred twenty-one".