11012021223 has 12 divisors (see below), whose sum is σ = 17079869880. Its totient is φ = 6292583472.

The previous prime is 11012021219. The next prime is 11012021233. The reversal of 11012021223 is 32212021011.

It is not a de Polignac number, because 11012021223 - 2² = 11012021219 is a prime.

It is a super-2 number, since 2×11012021223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012021233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37455708 + ... + 37456001.

It is an arithmetic number, because the mean of its divisors is an integer number (1423322490).

Almost surely, 2^11012021223 is an apocalyptic number.

11012021223 is a deficient number, since it is larger than the sum of its proper divisors (6067848657).

11012021223 is an equidigital number, since it uses as much as digits as its factorization.

11012021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74911726 (or 74911719 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11012021223 its reverse (32212021011), we get a palindrome (43224042234).

The spelling of 11012021223 in words is "eleven billion, twelve million, twenty-one thousand, two hundred twenty-three".