123221229953 has 2 divisors, whose sum is σ = 123221229954. Its totient is φ = 123221229952.

The previous prime is 123221229949. The next prime is 123221229983. The reversal of 123221229953 is 359922122321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91740534769 + 31480695184 = 302887^2 + 177428^2 .

It is a cyclic number.

It is not a de Polignac number, because 123221229953 - 2² = 123221229949 is a prime.

It is a super-2 number, since 2×123221229953² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123221229953.

It is not a weakly prime, because it can be changed into another prime (123221229983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610614976 + 61610614977.

It is an arithmetic number, because the mean of its divisors is an integer number (61610614977).

Almost surely, 2^123221229953 is an apocalyptic number.

It is an amenable number.

123221229953 is a deficient number, since it is larger than the sum of its proper divisors (1).

123221229953 is an equidigital number, since it uses as much as digits as its factorization.

123221229953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The spelling of 123221229953 in words is "one hundred twenty-three billion, two hundred twenty-one million, two hundred twenty-nine thousand, nine hundred fifty-three".