123221011210 has 32 divisors (see below), whose sum is σ = 252481318272. Its totient is φ = 42859481280.

The previous prime is 123221011181. The next prime is 123221011211. The reversal of 123221011210 is 12110122321.

It is a super-2 number, since 2×123221011210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123221011211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24349449 + ... + 24354508.

It is an arithmetic number, because the mean of its divisors is an integer number (7890041196).

Almost surely, 2^123221011210 is an apocalyptic number.

123221011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123221011210 is an abundant number, since it is smaller than the sum of its proper divisors (129260307062).

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

123221011210 is a wasteful number, since it uses less digits than its factorization.

123221011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48703998.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123221011210 its reverse (12110122321), we get a palindrome (135331133531).

Subtracting from 123221011210 its reverse (12110122321), we obtain a square (111110888889 = 333333²).

The spelling of 123221011210 in words is "one hundred twenty-three billion, two hundred twenty-one million, eleven thousand, two hundred ten".