123213223997 has 2 divisors, whose sum is σ = 123213223998. Its totient is φ = 123213223996.

The previous prime is 123213223967. The next prime is 123213224003. The reversal of 123213223997 is 799322312321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122149551001 + 1063672996 = 349499^2 + 32614^2 .

It is a cyclic number.

It is not a de Polignac number, because 123213223997 - 2³⁴ = 106033354813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123213223927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606611998 + 61606611999.

It is an arithmetic number, because the mean of its divisors is an integer number (61606611999).

Almost surely, 2^123213223997 is an apocalyptic number.

It is an amenable number.

123213223997 is a deficient number, since it is larger than the sum of its proper divisors (1).

123213223997 is an equidigital number, since it uses as much as digits as its factorization.

123213223997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The spelling of 123213223997 in words is "one hundred twenty-three billion, two hundred thirteen million, two hundred twenty-three thousand, nine hundred ninety-seven".