221222131042231 has 16 divisors (see below), whose sum is σ = 243766537303968. Its totient is φ = 199083992112000.

The previous prime is 221222131042201. The next prime is 221222131042307. The reversal of 221222131042231 is 132240131222122.

221222131042231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221222131042231 - 2⁷ = 221222131042103 is a prime.

It is a super-2 number, since 2×221222131042231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221222131042231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222131042201) 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, 11742300 + ... + 24089953.

It is an arithmetic number, because the mean of its divisors is an integer number (15235408581498).

Almost surely, 2^{221222131042231} is an apocalyptic number.

221222131042231 is a deficient number, since it is larger than the sum of its proper divisors (22544406261737).

221222131042231 is a wasteful number, since it uses less digits than its factorization.

221222131042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35837922.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221222131042231 its reverse (132240131222122), we get a palindrome (353462262264353).

The spelling of 221222131042231 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred thirty-one million, forty-two thousand, two hundred thirty-one".