11211213023 has 16 divisors (see below), whose sum is σ = 12286172160. Its totient is φ = 10184227200.

The previous prime is 11211212983. The next prime is 11211213043. The reversal of 11211213023 is 32031211211.

It is a cyclic number.

It is not a de Polignac number, because 11211213023 - 2¹⁶ = 11211147487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211212992 and 11211213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211213043) 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 15 ways as a sum of consecutive naturals, for example, 171668 + ... + 227798.

It is an arithmetic number, because the mean of its divisors is an integer number (767885760).

Almost surely, 2^11211213023 is an apocalyptic number.

11211213023 is a deficient number, since it is larger than the sum of its proper divisors (1074959137).

11211213023 is a wasteful number, since it uses less digits than its factorization.

11211213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56558.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11211213023 its reverse (32031211211), we get a palindrome (43242424234).

The spelling of 11211213023 in words is "eleven billion, two hundred eleven million, two hundred thirteen thousand, twenty-three".