123220223131 has 2 divisors, whose sum is σ = 123220223132. Its totient is φ = 123220223130.

The previous prime is 123220223101. The next prime is 123220223141. The reversal of 123220223131 is 131322022321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123220223131 - 2¹³ = 123220214939 is a prime.

It is a super-2 number, since 2×123220223131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123220223101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610111565 + 61610111566.

It is an arithmetic number, because the mean of its divisors is an integer number (61610111566).

Almost surely, 2^123220223131 is an apocalyptic number.

123220223131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220223131 is an equidigital number, since it uses as much as digits as its factorization.

123220223131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123220223131 its reverse (131322022321), we get a palindrome (254542245452).

The spelling of 123220223131 in words is "one hundred twenty-three billion, two hundred twenty million, two hundred twenty-three thousand, one hundred thirty-one".