1002220111231 has 4 divisors (see below), whose sum is σ = 1004503073200. Its totient is φ = 999937149264.

The previous prime is 1002220111219. The next prime is 1002220111259. The reversal of 1002220111231 is 1321110222001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002220111231 - 2⁷ = 1002220111103 is a prime.

It is a super-2 number, since 2×1002220111231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002220111201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141480326 + ... + 1141481203.

It is an arithmetic number, because the mean of its divisors is an integer number (251125768300).

Almost surely, 2^{1002220111231} is an apocalyptic number.

1002220111231 is a deficient number, since it is larger than the sum of its proper divisors (2282961969).

1002220111231 is an equidigital number, since it uses as much as digits as its factorization.

1002220111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282961968.

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

Adding to 1002220111231 its reverse (1321110222001), we get a palindrome (2323330333232).

The spelling of 1002220111231 in words is "one trillion, two billion, two hundred twenty million, one hundred eleven thousand, two hundred thirty-one".