1120100111221 has 12 divisors (see below), whose sum is σ = 1386159395232. Its totient is φ = 886233054096.

The previous prime is 1120100111203. The next prime is 1120100111231. The reversal of 1120100111221 is 1221110010211.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1120100111221 is a prime.

It is a super-2 number, since 2×1120100111221² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120100111231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473413911 + ... + 473416276.

It is an arithmetic number, because the mean of its divisors is an integer number (115513282936).

Almost surely, 2^{1120100111221} is an apocalyptic number.

It is an amenable number.

1120100111221 is a deficient number, since it is larger than the sum of its proper divisors (266059284011).

1120100111221 is an equidigital number, since it uses as much as digits as its factorization.

1120100111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946830220 (or 946830207 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1120100111221 its reverse (1221110010211), we get a palindrome (2341210121432).

It can be divided in two parts, 1120100 and 111221, that added together give a palindrome (1231321).

The spelling of 1120100111221 in words is "one trillion, one hundred twenty billion, one hundred million, one hundred eleven thousand, two hundred twenty-one".