123130222381 has 2 divisors, whose sum is σ = 123130222382. Its totient is φ = 123130222380.

The previous prime is 123130222357. The next prime is 123130222393. The reversal of 123130222381 is 183222031321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103003125481 + 20127096900 = 320941^2 + 141870^2 .

It is a cyclic number.

It is not a de Polignac number, because 123130222381 - 2⁹ = 123130221869 is a prime.

It is a super-2 number, since 2×123130222381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123130222081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61565111190 + 61565111191.

It is an arithmetic number, because the mean of its divisors is an integer number (61565111191).

Almost surely, 2^123130222381 is an apocalyptic number.

It is an amenable number.

123130222381 is a deficient number, since it is larger than the sum of its proper divisors (1).

123130222381 is an equidigital number, since it uses as much as digits as its factorization.

123130222381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 123130222381 in words is "one hundred twenty-three billion, one hundred thirty million, two hundred twenty-two thousand, three hundred eighty-one".