123212221100 has 36 divisors (see below), whose sum is σ = 267566405904. Its totient is φ = 49248780480.

The previous prime is 123212221061. The next prime is 123212221169. The reversal of 123212221100 is 1122212321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313967 + ... + 587366.

It is an arithmetic number, because the mean of its divisors is an integer number (7432400164).

Almost surely, 2^123212221100 is an apocalyptic number.

123212221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123212221100 is an abundant number, since it is smaller than the sum of its proper divisors (144354184804).

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

123212221100 is a wasteful number, since it uses less digits than its factorization.

123212221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902714 (or 902707 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123212221100 its reverse (1122212321), we get a palindrome (124334433421).

It can be divided in two parts, 123212221 and 100, that added together give a palindrome (123212321).

The spelling of 123212221100 in words is "one hundred twenty-three billion, two hundred twelve million, two hundred twenty-one thousand, one hundred".