900000011222101 has 4 divisors (see below), whose sum is σ = 900000126386604. Its totient is φ = 899999896057600.

The previous prime is 900000011222083. The next prime is 900000011222141. The reversal of 900000011222101 is 101222110000009.

It is a happy number.

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 617818001843025 + 282182009379076 = 24855945^2 + 16798274^2 .

It is a cyclic number.

It is not a de Polignac number, because 900000011222101 - 2⁵ = 900000011222069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900000011222141) 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, 44933770 + ... + 61798411.

It is an arithmetic number, because the mean of its divisors is an integer number (225000031596651).

Almost surely, 2^{900000011222101} is an apocalyptic number.

It is an amenable number.

900000011222101 is a deficient number, since it is larger than the sum of its proper divisors (115164503).

900000011222101 is a wasteful number, since it uses less digits than its factorization.

900000011222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115164502.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 900000011222101 in words is "nine hundred trillion, eleven million, two hundred twenty-two thousand, one hundred one".