221133225031 has 2 divisors, whose sum is σ = 221133225032. Its totient is φ = 221133225030.

The previous prime is 221133225011. The next prime is 221133225037. The reversal of 221133225031 is 130522331122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221133225031 - 2⁹ = 221133224519 is a prime.

It is a super-2 number, since 2×221133225031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221133224987 and 221133225005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221133225037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566612515 + 110566612516.

It is an arithmetic number, because the mean of its divisors is an integer number (110566612516).

Almost surely, 2^221133225031 is an apocalyptic number.

221133225031 is a deficient number, since it is larger than the sum of its proper divisors (1).

221133225031 is an equidigital number, since it uses as much as digits as its factorization.

221133225031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 221133225031 its reverse (130522331122), we get a palindrome (351655556153).

The spelling of 221133225031 in words is "two hundred twenty-one billion, one hundred thirty-three million, two hundred twenty-five thousand, thirty-one".