123211131010 has 96 divisors (see below), whose sum is σ = 252928494000. Its totient is φ = 43130841600.

The previous prime is 123211131007. The next prime is 123211131067. The reversal of 123211131010 is 10131112321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 73755153241 + 49455977769 = 271579^2 + 222387^2 .

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 47 ways as a sum of consecutive naturals, for example, 12241380 + ... + 12251440.

Almost surely, 2^123211131010 is an apocalyptic number.

123211131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123211131010 is an abundant number, since it is smaller than the sum of its proper divisors (129717362990).

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

123211131010 is a wasteful number, since it uses less digits than its factorization.

123211131010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10468 (or 10457 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 123211131010 its reverse (10131112321), we get a palindrome (133342243331).

The spelling of 123211131010 in words is "one hundred twenty-three billion, two hundred eleven million, one hundred thirty-one thousand, ten".