1011102312221 has 4 divisors (see below), whose sum is σ = 1011105330432. Its totient is φ = 1011099294012.

The previous prime is 1011102312197. The next prime is 1011102312247. The reversal of 1011102312221 is 1222132011101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011102312221 - 2³⁸ = 736224405277 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 1011102312221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011102312271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933395 + ... + 1701008.

It is an arithmetic number, because the mean of its divisors is an integer number (252776332608).

Almost surely, 2^{1011102312221} is an apocalyptic number.

It is an amenable number.

1011102312221 is a deficient number, since it is larger than the sum of its proper divisors (3018211).

1011102312221 is an equidigital number, since it uses as much as digits as its factorization.

1011102312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018210.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1011102312221 its reverse (1222132011101), we get a palindrome (2233234323322).

The spelling of 1011102312221 in words is "one trillion, eleven billion, one hundred two million, three hundred twelve thousand, two hundred twenty-one".