1110021231220 has 96 divisors (see below), whose sum is σ = 2656693468800. Its totient is φ = 385866432000.

The previous prime is 1110021231181. The next prime is 1110021231251. The reversal of 1110021231220 is 221321200111.

It is a junction number, because it is equal to n+sod(n) for n = 1110021231194 and 1110021231203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216930 + ... + 1505689.

It is an arithmetic number, because the mean of its divisors is an integer number (27673890300).

Almost surely, 2^{1110021231220} is an apocalyptic number.

1110021231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1110021231220 is an abundant number, since it is smaller than the sum of its proper divisors (1546672237580).

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

1110021231220 is a wasteful number, since it uses less digits than its factorization.

1110021231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722769 (or 1722767 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1110021231220 its reverse (221321200111), we get a palindrome (1331342431331).

The spelling of 1110021231220 in words is "one trillion, one hundred ten billion, twenty-one million, two hundred thirty-one thousand, two hundred twenty".