123122311002 has 12 divisors (see below), whose sum is σ = 266765007210. Its totient is φ = 41040770328.

The previous prime is 123122310979. The next prime is 123122311019. The reversal of 123122311002 is 200113221321.

It can be written as a sum of positive squares in only one way, i.e., 119412404721 + 3709906281 = 345561^2 + 60909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6840128389 = 123122311002 / (1 + 2 + 3 + 1 + 2 + 2 + 3 + 1 + 1 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3420064177 + ... + 3420064212.

Almost surely, 2^123122311002 is an apocalyptic number.

123122311002 is an abundant number, since it is smaller than the sum of its proper divisors (143642696208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123122311002 is a wasteful number, since it uses less digits than its factorization.

123122311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840128397 (or 6840128394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123122311002 its reverse (200113221321), we get a palindrome (323235532323).

The spelling of 123122311002 in words is "one hundred twenty-three billion, one hundred twenty-two million, three hundred eleven thousand, two".