12212123120 has 20 divisors (see below), whose sum is σ = 28393186440. Its totient is φ = 4884849216.

The previous prime is 12212123113. The next prime is 12212123141. The reversal of 12212123120 is 2132121221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76325690 + ... + 76325849.

It is an arithmetic number, because the mean of its divisors is an integer number (1419659322).

Almost surely, 2^12212123120 is an apocalyptic number.

12212123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212123120 is an abundant number, since it is smaller than the sum of its proper divisors (16181063320).

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

12212123120 is a wasteful number, since it uses less digits than its factorization.

12212123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152651552 (or 152651546 counting only the distinct ones).

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

Adding to 12212123120 its reverse (2132121221), we get a palindrome (14344244341).

The spelling of 12212123120 in words is "twelve billion, two hundred twelve million, one hundred twenty-three thousand, one hundred twenty".