12021122122 has 8 divisors (see below), whose sum is σ = 18980719200. Its totient is φ = 5694215724.

The previous prime is 12021122119. The next prime is 12021122131. The reversal of 12021122122 is 22122112021.

It is a happy number.

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

It is a super-4 number, since 4×12021122122⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12021122096 and 12021122105.

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, 158172622 + ... + 158172697.

It is an arithmetic number, because the mean of its divisors is an integer number (2372589900).

Almost surely, 2^12021122122 is an apocalyptic number.

12021122122 is a deficient number, since it is larger than the sum of its proper divisors (6959597078).

12021122122 is a wasteful number, since it uses less digits than its factorization.

12021122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316345340.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021122122 its reverse (22122112021), we get a palindrome (34143234143).

The spelling of 12021122122 in words is "twelve billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".