221100213202231 has 16 divisors (see below), whose sum is σ = 243392293251360. Its totient is φ = 199174317905920.

The previous prime is 221100213202207. The next prime is 221100213202247. The reversal of 221100213202231 is 132202312001122.

It is a cyclic number.

It is not a de Polignac number, because 221100213202231 - 2³⁹ = 220550457388343 is a prime.

It is a super-2 number, since 2×221100213202231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100213202831) 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, 15773890 + ... + 26287183.

It is an arithmetic number, because the mean of its divisors is an integer number (15212018328210).

Almost surely, 2^{221100213202231} is an apocalyptic number.

221100213202231 is a deficient number, since it is larger than the sum of its proper divisors (22292080049129).

221100213202231 is a wasteful number, since it uses less digits than its factorization.

221100213202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42065426.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221100213202231 its reverse (132202312001122), we get a palindrome (353302525203353).

The spelling of 221100213202231 in words is "two hundred twenty-one trillion, one hundred billion, two hundred thirteen million, two hundred two thousand, two hundred thirty-one".