901110121 has 4 divisors (see below), whose sum is σ = 901338244. Its totient is φ = 900882000.

The previous prime is 901110113. The next prime is 901110163. The reversal of 901110121 is 121011109.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275560000 + 625550121 = 16600^2 + 25011^2 .

It is a cyclic number.

It is not a de Polignac number, because 901110121 - 2³ = 901110113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 901110095 and 901110104.

It is not an unprimeable number, because it can be changed into a prime (901110101) 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, 108030 + ... + 116071.

It is an arithmetic number, because the mean of its divisors is an integer number (225334561).

Almost surely, 2^901110121 is an apocalyptic number.

It is an amenable number.

901110121 is a deficient number, since it is larger than the sum of its proper divisors (228123).

901110121 is a wasteful number, since it uses less digits than its factorization.

901110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228122.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 901110121 is about 30018.4963147723. The cubic root of 901110121 is about 965.8861881841.

The spelling of 901110121 in words is "nine hundred one million, one hundred ten thousand, one hundred twenty-one".