1200021221120 has 72 divisors (see below), whose sum is σ = 2875084423344. Its totient is φ = 479898509312.

The previous prime is 1200021221071. The next prime is 1200021221167. The reversal of 1200021221120 is 211221200021.

It is a super-2 number, since 2×1200021221120² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200021221095 and 1200021221104.

It is a congruent number.

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, 5599787 + ... + 5810133.

It is an arithmetic number, because the mean of its divisors is an integer number (39931728102).

Almost surely, 2^{1200021221120} is an apocalyptic number.

1200021221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200021221120 is an abundant number, since it is smaller than the sum of its proper divisors (1675063202224).

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

1200021221120 is an equidigital number, since it uses as much as digits as its factorization.

1200021221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214825 (or 214811 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200021221120 its reverse (211221200021), we get a palindrome (1411242421141).

The spelling of 1200021221120 in words is "one trillion, two hundred billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty".