22121404332 has 12 divisors (see below), whose sum is σ = 51616610136. Its totient is φ = 7373801440.

The previous prime is 22121404321. The next prime is 22121404367. The reversal of 22121404332 is 23340412122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921725169 + ... + 921725192.

It is an arithmetic number, because the mean of its divisors is an integer number (4301384178).

Almost surely, 2^22121404332 is an apocalyptic number.

It is an amenable number.

22121404332 is an abundant number, since it is smaller than the sum of its proper divisors (29495205804).

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

22121404332 is a wasteful number, since it uses less digits than its factorization.

22121404332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843450368 (or 1843450366 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 22121404332 its reverse (23340412122), we get a palindrome (45461816454).

The spelling of 22121404332 in words is "twenty-two billion, one hundred twenty-one million, four hundred four thousand, three hundred thirty-two".