1013122002221 has 6 divisors (see below), whose sum is σ = 1178529676110. Its totient is φ = 868390287576.

The previous prime is 1013122002203. The next prime is 1013122002227. The reversal of 1013122002221 is 1222002213101.

It can be written as a sum of positive squares in only one way, i.e., 547296642025 + 465825360196 = 739795^2 + 682514^2 .

It is not a de Polignac number, because 1013122002221 - 2¹⁸ = 1013121740077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013122002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013122002227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10337979566 + ... + 10337979663.

It is an arithmetic number, because the mean of its divisors is an integer number (196421612685).

Almost surely, 2^{1013122002221} is an apocalyptic number.

It is an amenable number.

1013122002221 is a deficient number, since it is larger than the sum of its proper divisors (165407673889).

1013122002221 is an equidigital number, since it uses as much as digits as its factorization.

1013122002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20675959243 (or 20675959236 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1013122002221 its reverse (1222002213101), we get a palindrome (2235124215322).

The spelling of 1013122002221 in words is "one trillion, thirteen billion, one hundred twenty-two million, two thousand, two hundred twenty-one".