221022201131 has 2 divisors, whose sum is σ = 221022201132. Its totient is φ = 221022201130.

The previous prime is 221022201097. The next prime is 221022201143. The reversal of 221022201131 is 131102220122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221022201131 - 2⁶ = 221022201067 is a prime.

It is a super-2 number, since 2×221022201131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221022201161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511100565 + 110511100566.

It is an arithmetic number, because the mean of its divisors is an integer number (110511100566).

Almost surely, 2^221022201131 is an apocalyptic number.

221022201131 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022201131 is an equidigital number, since it uses as much as digits as its factorization.

221022201131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221022201131 its reverse (131102220122), we get a palindrome (352124421253).

The spelling of 221022201131 in words is "two hundred twenty-one billion, twenty-two million, two hundred one thousand, one hundred thirty-one".