900131121 has 12 divisors (see below), whose sum is σ = 1305632640. Its totient is φ = 597575160.

The previous prime is 900131119. The next prime is 900131129. The reversal of 900131121 is 121131009.

It is not a de Polignac number, because 900131121 - 2¹ = 900131119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 900131094 and 900131103.

It is not an unprimeable number, because it can be changed into a prime (900131129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207085 + ... + 211386.

It is an arithmetic number, because the mean of its divisors is an integer number (108802720).

Almost surely, 2^900131121 is an apocalyptic number.

It is an amenable number.

900131121 is a deficient number, since it is larger than the sum of its proper divisors (405501519).

900131121 is a wasteful number, since it uses less digits than its factorization.

900131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418716 (or 418713 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 900131121 is about 30002.1852704099. The cubic root of 900131121 is about 965.5362697116.

The spelling of 900131121 in words is "nine hundred million, one hundred thirty-one thousand, one hundred twenty-one".