1220221211120 has 80 divisors (see below), whose sum is σ = 2863209600000. Its totient is φ = 483602321664.

The previous prime is 1220221211063. The next prime is 1220221211179. The reversal of 1220221211120 is 211121220221.

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

It is a super-2 number, since 2×1220221211120² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 3644531 + ... + 3965229.

It is an arithmetic number, because the mean of its divisors is an integer number (35790120000).

Almost surely, 2^{1220221211120} is an apocalyptic number.

1220221211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220221211120 is an abundant number, since it is smaller than the sum of its proper divisors (1642988388880).

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

1220221211120 is a wasteful number, since it uses less digits than its factorization.

1220221211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321150 (or 321144 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220221211120 its reverse (211121220221), we get a palindrome (1431342431341).

It can be divided in two parts, 1220221 and 211120, that added together give a palindrome (1431341).

The spelling of 1220221211120 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty".