12222121120 has 48 divisors (see below), whose sum is σ = 31499743968. Its totient is φ = 4444407040.

The previous prime is 12222121103. The next prime is 12222121147. The reversal of 12222121120 is 2112122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12222121094 and 12222121103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470434 + ... + 3473953.

It is an arithmetic number, because the mean of its divisors is an integer number (656244666).

Almost surely, 2^12222121120 is an apocalyptic number.

12222121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222121120 is an abundant number, since it is smaller than the sum of its proper divisors (19277622848).

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

12222121120 is a wasteful number, since it uses less digits than its factorization.

12222121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944413 (or 6944405 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222121120 its reverse (2112122221), we get a palindrome (14334243341).

It can be divided in two parts, 122221 and 21120, that added together give a palindrome (143341).

The spelling of 12222121120 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".