221031211123101 has 8 divisors (see below), whose sum is σ = 294708426842560. Its totient is φ = 147354068076192.

The previous prime is 221031211123069. The next prime is 221031211123111. The reversal of 221031211123101 is 101321112130122.

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

It is not a de Polignac number, because 221031211123101 - 2⁵ = 221031211123069 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 (221031211123111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10623841 + ... + 23556918.

It is an arithmetic number, because the mean of its divisors is an integer number (36838553355320).

Almost surely, 2^{221031211123101} is an apocalyptic number.

It is an amenable number.

221031211123101 is a deficient number, since it is larger than the sum of its proper divisors (73677215719459).

221031211123101 is a wasteful number, since it uses less digits than its factorization.

221031211123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36336275.

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

Adding to 221031211123101 its reverse (101321112130122), we get a palindrome (322352323253223).

The spelling of 221031211123101 in words is "two hundred twenty-one trillion, thirty-one billion, two hundred eleven million, one hundred twenty-three thousand, one hundred one".