2120122200221 has 8 divisors (see below), whose sum is σ = 2283607756320. Its totient is φ = 1961826661872.

The previous prime is 2120122200191. The next prime is 2120122200241. The reversal of 2120122200221 is 1220022210212.

It is a happy number.

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 2120122200221 - 2²² = 2120118005917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120122200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122200241) 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, 1297503590 + ... + 1297505223.

It is an arithmetic number, because the mean of its divisors is an integer number (285450969540).

Almost surely, 2^{2120122200221} is an apocalyptic number.

It is an amenable number.

2120122200221 is a deficient number, since it is larger than the sum of its proper divisors (163485556099).

2120122200221 is a wasteful number, since it uses less digits than its factorization.

2120122200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595008875.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2120122200221 its reverse (1220022210212), we get a palindrome (3340144410433).

Subtracting from 2120122200221 its reverse (1220022210212), we obtain a palindrome (900099990009).

The spelling of 2120122200221 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".