22132155421 has 8 divisors (see below), whose sum is σ = 23097017664. Its totient is φ = 21167509440.

The previous prime is 22132155413. The next prime is 22132155503. The reversal of 22132155421 is 12455123122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22132155421 - 2³ = 22132155413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22132155421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132155401) 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, 175941 + ... + 274261.

It is an arithmetic number, because the mean of its divisors is an integer number (2887127208).

Almost surely, 2^22132155421 is an apocalyptic number.

It is an amenable number.

22132155421 is a deficient number, since it is larger than the sum of its proper divisors (964862243).

22132155421 is an equidigital number, since it uses as much as digits as its factorization.

22132155421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108131.

The product of its digits is 4800, while the sum is 28.

Adding to 22132155421 its reverse (12455123122), we get a palindrome (34587278543).

The spelling of 22132155421 in words is "twenty-two billion, one hundred thirty-two million, one hundred fifty-five thousand, four hundred twenty-one".