2122001001221 has 8 divisors (see below), whose sum is σ = 2176398417984. Its totient is φ = 2067729360480.

The previous prime is 2122001001179. The next prime is 2122001001247. The reversal of 2122001001221 is 1221001002212.

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

It is a cyclic number.

It is not a de Polignac number, because 2122001001221 - 2²⁶ = 2121933892357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122001001196 and 2122001001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122001001521) 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, 31409831 + ... + 31477316.

It is an arithmetic number, because the mean of its divisors is an integer number (272049802248).

Almost surely, 2^{2122001001221} is an apocalyptic number.

It is an amenable number.

2122001001221 is a deficient number, since it is larger than the sum of its proper divisors (54397416763).

2122001001221 is an equidigital number, since it uses as much as digits as its factorization.

2122001001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62888011.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2122001001221 its reverse (1221001002212), we get a palindrome (3343002003433).

Subtracting from 2122001001221 its reverse (1221001002212), we obtain a palindrome (900999999009).

The spelling of 2122001001221 in words is "two trillion, one hundred twenty-two billion, one million, one thousand, two hundred twenty-one".