1013221203311 has 4 divisors (see below), whose sum is σ = 1013718126000. Its totient is φ = 1012724280624.

The previous prime is 1013221203289. The next prime is 1013221203329. The reversal of 1013221203311 is 1133021223101.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013221203311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013221203361) 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, 248458286 + ... + 248462363.

It is an arithmetic number, because the mean of its divisors is an integer number (253429531500).

Almost surely, 2^{1013221203311} is an apocalyptic number.

1013221203311 is a deficient number, since it is larger than the sum of its proper divisors (496922689).

1013221203311 is an equidigital number, since it uses as much as digits as its factorization.

1013221203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496922688.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1013221203311 its reverse (1133021223101), we get a palindrome (2146242426412).

The spelling of 1013221203311 in words is "one trillion, thirteen billion, two hundred twenty-one million, two hundred three thousand, three hundred eleven".