11221212023 has 12 divisors (see below), whose sum is σ = 13055157792. Its totient is φ = 9616773600.

The previous prime is 11221212019. The next prime is 11221212029. The reversal of 11221212023 is 32021212211.

It is not a de Polignac number, because 11221212023 - 2² = 11221212019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221211992 and 11221212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221212029) 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, 456011 + ... + 479987.

It is an arithmetic number, because the mean of its divisors is an integer number (1087929816).

Almost surely, 2^11221212023 is an apocalyptic number.

11221212023 is a deficient number, since it is larger than the sum of its proper divisors (1833945769).

11221212023 is an equidigital number, since it uses as much as digits as its factorization.

11221212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33542 (or 33535 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11221212023 its reverse (32021212211), we get a palindrome (43242424234).

The spelling of 11221212023 in words is "eleven billion, two hundred twenty-one million, two hundred twelve thousand, twenty-three".