12001121020122 has 16 divisors (see below), whose sum is σ = 25848568351200. Its totient is φ = 3692652621552.

The previous prime is 12001121020099. The next prime is 12001121020129. The reversal of 12001121020122 is 22102012110021.

12001121020122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12001121020122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12001121020129) 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, 76930262872 + ... + 76930263027.

It is an arithmetic number, because the mean of its divisors is an integer number (1615535521950).

Almost surely, 2^{12001121020122} is an apocalyptic number.

12001121020122 is an abundant number, since it is smaller than the sum of its proper divisors (13847447331078).

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

12001121020122 is a wasteful number, since it uses less digits than its factorization.

12001121020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153860525917.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12001121020122 its reverse (22102012110021), we get a palindrome (34103133130143).

The spelling of 12001121020122 in words is "twelve trillion, one billion, one hundred twenty-one million, twenty thousand, one hundred twenty-two".