221011122022231 has 2 divisors, whose sum is σ = 221011122022232. Its totient is φ = 221011122022230.

The previous prime is 221011122022057. The next prime is 221011122022247. The reversal of 221011122022231 is 132220221110122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221011122022231 is a prime.

It is a super-2 number, since 2×221011122022231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221011122022261) 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 as a sum of consecutive naturals, namely, 110505561011115 + 110505561011116.

It is an arithmetic number, because the mean of its divisors is an integer number (110505561011116).

Almost surely, 2^{221011122022231} is an apocalyptic number.

221011122022231 is a deficient number, since it is larger than the sum of its proper divisors (1).

221011122022231 is an equidigital number, since it uses as much as digits as its factorization.

221011122022231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221011122022231 its reverse (132220221110122), we get a palindrome (353231343132353).

The spelling of 221011122022231 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-two million, twenty-two thousand, two hundred thirty-one".