1222212211120 has 80 divisors (see below), whose sum is σ = 2991622140000. Its totient is φ = 463089291264.

The previous prime is 1222212211079. The next prime is 1222212211159. The reversal of 1222212211120 is 211122122221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11604456 + ... + 11709304.

It is an arithmetic number, because the mean of its divisors is an integer number (37395276750).

Almost surely, 2^{1222212211120} is an apocalyptic number.

1222212211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222212211120 is an abundant number, since it is smaller than the sum of its proper divisors (1769409928880).

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

1222212211120 is a wasteful number, since it uses less digits than its factorization.

1222212211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112550 (or 112544 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222212211120 its reverse (211122122221), we get a palindrome (1433334333341).

The spelling of 1222212211120 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty".