221100201113231 has 8 divisors (see below), whose sum is σ = 241202756630784. Its totient is φ = 200998068468120.

The previous prime is 221100201113137. The next prime is 221100201113359. The reversal of 221100201113231 is 132311102001122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-221100201113231 is a prime.

It is a super-2 number, since 2×221100201113231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100201110231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104624375 + ... + 106716728.

It is an arithmetic number, because the mean of its divisors is an integer number (30150344578848).

Almost surely, 2^{221100201113231} is an apocalyptic number.

221100201113231 is a deficient number, since it is larger than the sum of its proper divisors (20102555517553).

221100201113231 is a wasteful number, since it uses less digits than its factorization.

221100201113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211436221.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 221100201113231 its reverse (132311102001122), we get a palindrome (353411303114353).

The spelling of 221100201113231 in words is "two hundred twenty-one trillion, one hundred billion, two hundred one million, one hundred thirteen thousand, two hundred thirty-one".