1001120111220 has 24 divisors (see below), whose sum is σ = 2803136311584. Its totient is φ = 266965362976.

The previous prime is 1001120111207. The next prime is 1001120111231. The reversal of 1001120111220 is 221110211001.

1001120111220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1001120111196 and 1001120111205.

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, 8342667534 + ... + 8342667653.

It is an arithmetic number, because the mean of its divisors is an integer number (116797346316).

Almost surely, 2^{1001120111220} is an apocalyptic number.

1001120111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001120111220 is an abundant number, since it is smaller than the sum of its proper divisors (1802016200364).

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

1001120111220 is a wasteful number, since it uses less digits than its factorization.

1001120111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16685335199 (or 16685335197 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001120111220 its reverse (221110211001), we get a palindrome (1222230322221).

The spelling of 1001120111220 in words is "one trillion, one billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".