118101281 has 4 divisors (see below), whose sum is σ = 119524272. Its totient is φ = 116678292.

The previous prime is 118101257. The next prime is 118101337. The reversal of 118101281 is 182101811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 118101281 - 2²² = 113906977 is a prime.

It is a super-2 number, since 2×118101281² = 27895825147681922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118101241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711371 + ... + 711536.

It is an arithmetic number, because the mean of its divisors is an integer number (29881068).

Almost surely, 2^118101281 is an apocalyptic number.

It is an amenable number.

118101281 is a deficient number, since it is larger than the sum of its proper divisors (1422991).

118101281 is an equidigital number, since it uses as much as digits as its factorization.

118101281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422990.

The product of its (nonzero) digits is 128, while the sum is 23.

The square root of 118101281 is about 10867.4413271938. The cubic root of 118101281 is about 490.6271035165.

The spelling of 118101281 in words is "one hundred eighteen million, one hundred one thousand, two hundred eighty-one".