1011313020221 has 24 divisors (see below), whose sum is σ = 1212444747360. Its totient is φ = 840589196832.

The previous prime is 1011313020187. The next prime is 1011313020229. The reversal of 1011313020221 is 1220203131101.

It is a de Polignac number, because none of the positive numbers 2^k-1011313020221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011313020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011313020229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1433666 + ... + 2019411.

It is an arithmetic number, because the mean of its divisors is an integer number (50518531140).

Almost surely, 2^{1011313020221} is an apocalyptic number.

It is an amenable number.

1011313020221 is a deficient number, since it is larger than the sum of its proper divisors (201131727139).

1011313020221 is a wasteful number, since it uses less digits than its factorization.

1011313020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453273 (or 3453266 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1011313020221 its reverse (1220203131101), we get a palindrome (2231516151322).

The spelling of 1011313020221 in words is "one trillion, eleven billion, three hundred thirteen million, twenty thousand, two hundred twenty-one".