2120221122211 has 4 divisors (see below), whose sum is σ = 2120225361552. Its totient is φ = 2120216882872.

The previous prime is 2120221122203. The next prime is 2120221122221. The reversal of 2120221122211 is 1122211220212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120221122211 - 2³ = 2120221122203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120221122221) 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, 1250740 + ... + 2409313.

It is an arithmetic number, because the mean of its divisors is an integer number (530056340388).

Almost surely, 2^{2120221122211} is an apocalyptic number.

2120221122211 is a deficient number, since it is larger than the sum of its proper divisors (4239341).

2120221122211 is an equidigital number, since it uses as much as digits as its factorization.

2120221122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239340.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2120221122211 its reverse (1122211220212), we get a palindrome (3242432342423).

The spelling of 2120221122211 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred eleven".