123211004402 has 16 divisors (see below), whose sum is σ = 190626215832. Its totient is φ = 59683224960.

The previous prime is 123211004401. The next prime is 123211004447. The reversal of 123211004402 is 204400112321.

It can be written as a sum of positive squares in 4 ways, for example, as 112259172601 + 10951831801 = 335051^2 + 104651^2 .

It is not an unprimeable number, because it can be changed into a prime (123211004401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555749 + ... + 3590232.

Almost surely, 2^123211004402 is an apocalyptic number.

123211004402 is a deficient number, since it is larger than the sum of its proper divisors (67415211430).

123211004402 is a wasteful number, since it uses less digits than its factorization.

123211004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146253.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123211004402 its reverse (204400112321), we get a palindrome (327611116723).

The spelling of 123211004402 in words is "one hundred twenty-three billion, two hundred eleven million, four thousand, four hundred two".