22003121311 has 4 divisors (see below), whose sum is σ = 22216743952. Its totient is φ = 21789498672.

The previous prime is 22003121293. The next prime is 22003121339. The reversal of 22003121311 is 11312130022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312130022 = 2 ⋅5656065011.

It is a cyclic number.

It is not a de Polignac number, because 22003121311 - 2⁷ = 22003121183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003121381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106811166 + ... + 106811371.

It is an arithmetic number, because the mean of its divisors is an integer number (5554185988).

Almost surely, 2^22003121311 is an apocalyptic number.

22003121311 is a deficient number, since it is larger than the sum of its proper divisors (213622641).

22003121311 is a wasteful number, since it uses less digits than its factorization.

22003121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213622640.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 22003121311 its reverse (11312130022), we get a palindrome (33315251333).

The spelling of 22003121311 in words is "twenty-two billion, three million, one hundred twenty-one thousand, three hundred eleven".