900111220202001 has 16 divisors (see below), whose sum is σ = 1201973221152000. Its totient is φ = 599161688728848.

The previous prime is 900111220201993. The next prime is 900111220202059. The reversal of 900111220202001 is 100202022111009.

It is not a de Polignac number, because 900111220202001 - 2³ = 900111220201993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (900111220202801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955976350 + ... + 956917448.

It is an arithmetic number, because the mean of its divisors is an integer number (75123326322000).

Almost surely, 2^{900111220202001} is an apocalyptic number.

It is an amenable number.

900111220202001 is a deficient number, since it is larger than the sum of its proper divisors (301862000949999).

900111220202001 is a wasteful number, since it uses less digits than its factorization.

900111220202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425548.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 900111220202001 in words is "nine hundred trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, one".