123581974222 has 72 divisors (see below), whose sum is σ = 223723953936. Its totient is φ = 50147044992.

The previous prime is 123581974211. The next prime is 123581974231. The reversal of 123581974222 is 222479185321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 354102904 + ... + 354103252.

It is an arithmetic number, because the mean of its divisors is an integer number (3107277138).

Almost surely, 2^123581974222 is an apocalyptic number.

123581974222 is a deficient number, since it is larger than the sum of its proper divisors (100141979714).

123581974222 is an equidigital number, since it uses as much as digits as its factorization.

123581974222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 518 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The spelling of 123581974222 in words is "one hundred twenty-three billion, five hundred eighty-one million, nine hundred seventy-four thousand, two hundred twenty-two".