22121101424 has 40 divisors (see below), whose sum is σ = 45580572240. Its totient is φ = 10370377728.

The previous prime is 22121101423. The next prime is 22121101447. The reversal of 22121101424 is 42410112122.

It is a junction number, because it is equal to n+sod(n) for n = 22121101396 and 22121101405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121101423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345599 + ... + 404574.

It is an arithmetic number, because the mean of its divisors is an integer number (1139514306).

Almost surely, 2^22121101424 is an apocalyptic number.

It is an amenable number.

22121101424 is an abundant number, since it is smaller than the sum of its proper divisors (23459470816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121101424 is a wasteful number, since it uses less digits than its factorization.

22121101424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750297 (or 750291 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22121101424 its reverse (42410112122), we get a palindrome (64531213546).

The spelling of 22121101424 in words is "twenty-two billion, one hundred twenty-one million, one hundred one thousand, four hundred twenty-four".