22001312122 has 16 divisors (see below), whose sum is σ = 33235183080. Its totient is φ = 10923015168.

The previous prime is 22001312117. The next prime is 22001312153. The reversal of 22001312122 is 22121310022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7727992281 + 14273319841 = 87909^2 + 119471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22001312096 and 22001312105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444018 + ... + 491074.

Almost surely, 2^22001312122 is an apocalyptic number.

22001312122 is a deficient number, since it is larger than the sum of its proper divisors (11233870958).

22001312122 is a wasteful number, since it uses less digits than its factorization.

22001312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48705.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22001312122 its reverse (22121310022), we get a palindrome (44122622144).

The spelling of 22001312122 in words is "twenty-two billion, one million, three hundred twelve thousand, one hundred twenty-two".