1011013320221 has 2 divisors, whose sum is σ = 1011013320222. Its totient is φ = 1011013320220.

The previous prime is 1011013320211. The next prime is 1011013320299. The reversal of 1011013320221 is 1220233101101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538513807225 + 472499512996 = 733835^2 + 687386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011013320221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011013320221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011013320211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505506660110 + 505506660111.

It is an arithmetic number, because the mean of its divisors is an integer number (505506660111).

Almost surely, 2^{1011013320221} is an apocalyptic number.

It is an amenable number.

1011013320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011013320221 is an equidigital number, since it uses as much as digits as its factorization.

1011013320221 is an evil number, because the sum of its binary digits is even.

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

Adding to 1011013320221 its reverse (1220233101101), we get a palindrome (2231246421322).

The spelling of 1011013320221 in words is "one trillion, eleven billion, thirteen million, three hundred twenty thousand, two hundred twenty-one".