2021201012122 has 16 divisors (see below), whose sum is σ = 3192667999200. Its totient is φ = 957021611760.

The previous prime is 2021201012099. The next prime is 2021201012147. The reversal of 2021201012122 is 2212101021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021201012096 and 2021201012105.

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, 10721829 + ... + 10908712.

It is an arithmetic number, because the mean of its divisors is an integer number (199541749950).

Almost surely, 2^{2021201012122} is an apocalyptic number.

2021201012122 is a deficient number, since it is larger than the sum of its proper divisors (1171466987078).

2021201012122 is a wasteful number, since it uses less digits than its factorization.

2021201012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21633021.

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

Adding to 2021201012122 its reverse (2212101021202), we get a palindrome (4233302033324).

The spelling of 2021201012122 in words is "two trillion, twenty-one billion, two hundred one million, twelve thousand, one hundred twenty-two".