221122001131 has 2 divisors, whose sum is σ = 221122001132. Its totient is φ = 221122001130.

The previous prime is 221122001119. The next prime is 221122001141. The reversal of 221122001131 is 131100221122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221122001131 - 2¹¹ = 221121999083 is a prime.

It is a super-2 number, since 2×221122001131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221122001101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561000565 + 110561000566.

It is an arithmetic number, because the mean of its divisors is an integer number (110561000566).

Almost surely, 2^221122001131 is an apocalyptic number.

221122001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122001131 is an equidigital number, since it uses as much as digits as its factorization.

221122001131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221122001131 its reverse (131100221122), we get a palindrome (352222222253).

The spelling of 221122001131 in words is "two hundred twenty-one billion, one hundred twenty-two million, one thousand, one hundred thirty-one".