2120211221001 has 8 divisors (see below), whose sum is σ = 2903352302784. Its totient is φ = 1375272143280.

The previous prime is 2120211220993. The next prime is 2120211221027. The reversal of 2120211221001 is 1001221120212.

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

It is not a de Polignac number, because 2120211221001 - 2³ = 2120211220993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120211221701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9550500885 + ... + 9550501106.

It is an arithmetic number, because the mean of its divisors is an integer number (362919037848).

Almost surely, 2^{2120211221001} is an apocalyptic number.

It is an amenable number.

2120211221001 is a deficient number, since it is larger than the sum of its proper divisors (783141081783).

2120211221001 is a wasteful number, since it uses less digits than its factorization.

2120211221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19101002031.

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

Adding to 2120211221001 its reverse (1001221120212), we get a palindrome (3121432341213).

The spelling of 2120211221001 in words is "two trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, one".