1002021221120 has 72 divisors (see below), whose sum is σ = 2400325949616. Its totient is φ = 400779767808.

The previous prime is 1002021221111. The next prime is 1002021221137. The reversal of 1002021221120 is 211221202001.

It is a junction number, because it is equal to n+sod(n) for n = 1002021221095 and 1002021221104.

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, 33371234 + ... + 33401246.

Almost surely, 2^{1002021221120} is an apocalyptic number.

1002021221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002021221120 is an abundant number, since it is smaller than the sum of its proper divisors (1398304728496).

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

1002021221120 is an equidigital number, since it uses as much as digits as its factorization.

1002021221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56117 (or 56103 counting only the distinct ones).

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

Adding to 1002021221120 its reverse (211221202001), we get a palindrome (1213242423121).

The spelling of 1002021221120 in words is "one trillion, two billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty".