2120221111201 has 4 divisors (see below), whose sum is σ = 2125561718932. Its totient is φ = 2114880503472.

The previous prime is 2120221111199. The next prime is 2120221111237. The reversal of 2120221111201 is 1021111220212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1645742608225 + 474478502976 = 1282865^2 + 688824^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120221111201 - 2¹ = 2120221111199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120221111291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2670303270 + ... + 2670304063.

It is an arithmetic number, because the mean of its divisors is an integer number (531390429733).

Almost surely, 2^{2120221111201} is an apocalyptic number.

It is an amenable number.

2120221111201 is a deficient number, since it is larger than the sum of its proper divisors (5340607731).

2120221111201 is an equidigital number, since it uses as much as digits as its factorization.

2120221111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340607730.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2120221111201 its reverse (1021111220212), we get a palindrome (3141332331413).

The spelling of 2120221111201 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".