90110121 has 8 divisors (see below), whose sum is σ = 120195840. Its totient is φ = 60048912.

The previous prime is 90110107. The next prime is 90110129. The reversal of 90110121 is 12101109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90110121 - 2⁵ = 90110089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90110121.

It is not an unprimeable number, because it can be changed into a prime (90110129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5736 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (15024480).

Almost surely, 2^90110121 is an apocalyptic number.

It is an amenable number.

90110121 is a deficient number, since it is larger than the sum of its proper divisors (30085719).

90110121 is a wasteful number, since it uses less digits than its factorization.

90110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12255.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 90110121 is about 9492.6350925336. The cubic root of 90110121 is about 448.3231767422.

The spelling of 90110121 in words is "ninety million, one hundred ten thousand, one hundred twenty-one".