12021001122 has 16 divisors (see below), whose sum is σ = 25891387200. Its totient is φ = 3698769552.

The previous prime is 12021001117. The next prime is 12021001127. The reversal of 12021001122 is 22110012021.

It is an interprime number because it is at equal distance from previous prime (12021001117) and next prime (12021001127).

It is a junction number, because it is equal to n+sod(n) for n = 12021001098 and 12021001107.

It is not an unprimeable number, because it can be changed into a prime (12021001127) 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, 77057622 + ... + 77057777.

It is an arithmetic number, because the mean of its divisors is an integer number (1618211700).

Almost surely, 2^12021001122 is an apocalyptic number.

12021001122 is an abundant number, since it is smaller than the sum of its proper divisors (13870386078).

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

12021001122 is a wasteful number, since it uses less digits than its factorization.

12021001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154115417.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12021001122 its reverse (22110012021), we get a palindrome (34131013143).

The spelling of 12021001122 in words is "twelve billion, twenty-one million, one thousand, one hundred twenty-two".