2120002221001 has 12 divisors (see below), whose sum is σ = 2477812841040. Its totient is φ = 1808532691560.

The previous prime is 2120002220971. The next prime is 2120002221013. The reversal of 2120002221001 is 1001222000212.

It is a happy number.

It is not a de Polignac number, because 2120002221001 - 2⁷ = 2120002220873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120002221041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102514191 + ... + 102534868.

It is an arithmetic number, because the mean of its divisors is an integer number (206484403420).

Almost surely, 2^{2120002221001} is an apocalyptic number.

It is an amenable number.

2120002221001 is a deficient number, since it is larger than the sum of its proper divisors (357810620039).

2120002221001 is a wasteful number, since it uses less digits than its factorization.

2120002221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205049284 (or 205049277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2120002221001 its reverse (1001222000212), we get a palindrome (3121224221213).

The spelling of 2120002221001 in words is "two trillion, one hundred twenty billion, two million, two hundred twenty-one thousand, one".