2120022211211 has 4 divisors (see below), whose sum is σ = 2120039721624. Its totient is φ = 2120004700800.

The previous prime is 2120022211207. The next prime is 2120022211217. The reversal of 2120022211211 is 1121122200212.

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 2120022211211 - 2² = 2120022211207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120022211211.

It is not an unprimeable number, because it can be changed into a prime (2120022211217) 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, 8572325 + ... + 8816166.

It is an arithmetic number, because the mean of its divisors is an integer number (530009930406).

Almost surely, 2^{2120022211211} is an apocalyptic number.

2120022211211 is a deficient number, since it is larger than the sum of its proper divisors (17510413).

2120022211211 is a wasteful number, since it uses less digits than its factorization.

2120022211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17510412.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120022211211 its reverse (1121122200212), we get a palindrome (3241144411423).

The spelling of 2120022211211 in words is "two trillion, one hundred twenty billion, twenty-two million, two hundred eleven thousand, two hundred eleven".