221031100133 has 16 divisors (see below), whose sum is σ = 226089676800. Its totient is φ = 216030700080.

The previous prime is 221031100127. The next prime is 221031100153. The reversal of 221031100133 is 331001130122.

It is a cyclic number.

It is not a de Polignac number, because 221031100133 - 2²² = 221026905829 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 (221031100153) 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, 36768098 + ... + 36774108.

It is an arithmetic number, because the mean of its divisors is an integer number (14130604800).

Almost surely, 2^221031100133 is an apocalyptic number.

It is an amenable number.

221031100133 is a deficient number, since it is larger than the sum of its proper divisors (5058576667).

221031100133 is a wasteful number, since it uses less digits than its factorization.

221031100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 221031100133 its reverse (331001130122), we get a palindrome (552032230255).

The spelling of 221031100133 in words is "two hundred twenty-one billion, thirty-one million, one hundred thousand, one hundred thirty-three".