1011322121223 has 16 divisors (see below), whose sum is σ = 1392445587456. Its totient is φ = 652222900320.

The previous prime is 1011322121167. The next prime is 1011322121239. The reversal of 1011322121223 is 3221212231101.

It is not a de Polignac number, because 1011322121223 - 2²⁰ = 1011321072647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011322121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011322321223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1773636 + ... + 2273417.

It is an arithmetic number, because the mean of its divisors is an integer number (87027849216).

Almost surely, 2^{1011322121223} is an apocalyptic number.

1011322121223 is a deficient number, since it is larger than the sum of its proper divisors (381123466233).

1011322121223 is a wasteful number, since it uses less digits than its factorization.

1011322121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049774.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1011322121223 its reverse (3221212231101), we get a palindrome (4232534352324).

The spelling of 1011322121223 in words is "one trillion, eleven billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-three".