900100001201 has 4 divisors (see below), whose sum is σ = 900217838400. Its totient is φ = 899982164004.

The previous prime is 900100001173. The next prime is 900100001221. The reversal of 900100001201 is 102100001009.

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: 102100001009 = 47 ⋅2172340447.

It is a cyclic number.

It is not a de Polignac number, because 900100001201 - 2³⁰ = 899026259377 is a prime.

It is a super-4 number, since 4×900100001201⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900100001221) 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, 58907141 + ... + 58922418.

It is an arithmetic number, because the mean of its divisors is an integer number (225054459600).

Almost surely, 2^900100001201 is an apocalyptic number.

It is an amenable number.

900100001201 is a deficient number, since it is larger than the sum of its proper divisors (117837199).

900100001201 is a wasteful number, since it uses less digits than its factorization.

900100001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117837198.

The product of its (nonzero) digits is 18, while the sum is 14.

The spelling of 900100001201 in words is "nine hundred billion, one hundred million, one thousand, two hundred one".