22111045511 has 2 divisors, whose sum is σ = 22111045512. Its totient is φ = 22111045510.

The previous prime is 22111045501. The next prime is 22111045547. The reversal of 22111045511 is 11554011122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22111045511 - 2³⁰ = 21037303687 is a prime.

It is a super-2 number, since 2×22111045511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111045501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055522755 + 11055522756.

It is an arithmetic number, because the mean of its divisors is an integer number (11055522756).

Almost surely, 2^22111045511 is an apocalyptic number.

22111045511 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111045511 is an equidigital number, since it uses as much as digits as its factorization.

22111045511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 22111045511 its reverse (11554011122), we get a palindrome (33665056633).

The spelling of 22111045511 in words is "twenty-two billion, one hundred eleven million, forty-five thousand, five hundred eleven".