11221211023 has 8 divisors (see below), whose sum is σ = 12252554496. Its totient is φ = 10191739800.

The previous prime is 11221211011. The next prime is 11221211033. The reversal of 11221211023 is 32011212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11221211023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221210988 and 11221211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221211033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455511 + ... + 479512.

It is an arithmetic number, because the mean of its divisors is an integer number (1531569312).

Almost surely, 2^11221211023 is an apocalyptic number.

11221211023 is a deficient number, since it is larger than the sum of its proper divisors (1031343473).

11221211023 is a wasteful number, since it uses less digits than its factorization.

11221211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936125.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11221211023 its reverse (32011212211), we get a palindrome (43232423234).

The spelling of 11221211023 in words is "eleven billion, two hundred twenty-one million, two hundred eleven thousand, twenty-three".