123011133210 has 72 divisors (see below), whose sum is σ = 372045930516. Its totient is φ = 28116829440.

The previous prime is 123011133053. The next prime is 123011133233. The reversal of 123011133210 is 12331110321.

123011133210 is a `hidden beast` number, since 1 + 230 + 1 + 113 + 321 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 121800302001 + 1210831209 = 348999^2 + 34797^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13942431 + ... + 13951250.

Almost surely, 2^123011133210 is an apocalyptic number.

123011133210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123011133210 is an abundant number, since it is smaller than the sum of its proper divisors (249034797306).

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

123011133210 is a wasteful number, since it uses less digits than its factorization.

123011133210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27893708 (or 27893698 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123011133210 its reverse (12331110321), we get a palindrome (135342243531).

The spelling of 123011133210 in words is "one hundred twenty-three billion, eleven million, one hundred thirty-three thousand, two hundred ten".