22121040423 has 16 divisors (see below), whose sum is σ = 29982147840. Its totient is φ = 14504773824.

The previous prime is 22121040401. The next prime is 22121040439. The reversal of 22121040423 is 32404012122.

It is not a de Polignac number, because 22121040423 - 2⁵ = 22121040391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22121040423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121040463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62061 + ... + 219302.

It is an arithmetic number, because the mean of its divisors is an integer number (1873884240).

Almost surely, 2^22121040423 is an apocalyptic number.

22121040423 is a deficient number, since it is larger than the sum of its proper divisors (7861107417).

22121040423 is a wasteful number, since it uses less digits than its factorization.

22121040423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281798.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22121040423 its reverse (32404012122), we get a palindrome (54525052545).

The spelling of 22121040423 in words is "twenty-two billion, one hundred twenty-one million, forty thousand, four hundred twenty-three".