1111202331221 has 32 divisors (see below), whose sum is σ = 1221507993600. Its totient is φ = 1006291722240.

The previous prime is 1111202331181. The next prime is 1111202331229. The reversal of 1111202331221 is 1221332021111.

It is not a de Polignac number, because 1111202331221 - 2³⁰ = 1110128589397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111202331193 and 1111202331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111202331229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84759815 + ... + 84772923.

It is an arithmetic number, because the mean of its divisors is an integer number (38172124800).

Almost surely, 2^{1111202331221} is an apocalyptic number.

It is an amenable number.

1111202331221 is a deficient number, since it is larger than the sum of its proper divisors (110305662379).

1111202331221 is a wasteful number, since it uses less digits than its factorization.

1111202331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14069.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1111202331221 its reverse (1221332021111), we get a palindrome (2332534352332).

The spelling of 1111202331221 in words is "one trillion, one hundred eleven billion, two hundred two million, three hundred thirty-one thousand, two hundred twenty-one".