901101001 has 4 divisors (see below), whose sum is σ = 906629392. Its totient is φ = 895572612.

The previous prime is 901100989. The next prime is 901101007. The reversal of 901101001 is 100101109.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100101109 = 1931 ⋅51839.

It is a cyclic number.

It is not a de Polignac number, because 901101001 - 2⁹ = 901100489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901101007) 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, 2763951 + ... + 2764276.

It is an arithmetic number, because the mean of its divisors is an integer number (226657348).

Almost surely, 2^901101001 is an apocalyptic number.

It is an amenable number.

901101001 is a deficient number, since it is larger than the sum of its proper divisors (5528391).

901101001 is a wasteful number, since it uses less digits than its factorization.

901101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528390.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 901101001 is about 30018.3444080449. The cubic root of 901101001 is about 965.8829296435.

The spelling of 901101001 in words is "nine hundred one million, one hundred one thousand, one".