2121122120211 has 12 divisors (see below), whose sum is σ = 3094178143680. Its totient is φ = 1400080606800.

The previous prime is 2121122120197. The next prime is 2121122120237. The reversal of 2121122120211 is 1120212211212.

2121122120211 is a `hidden beast` number, since 2 + 1 + 211 + 221 + 20 + 211 = 666.

It is not a de Polignac number, because 2121122120211 - 2³⁵ = 2086762381843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121122120281) 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, 1166732931 + ... + 1166734748.

It is an arithmetic number, because the mean of its divisors is an integer number (257848178640).

Almost surely, 2^{2121122120211} is an apocalyptic number.

2121122120211 is a deficient number, since it is larger than the sum of its proper divisors (973056023469).

2121122120211 is a wasteful number, since it uses less digits than its factorization.

2121122120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333467786 (or 2333467783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2121122120211 its reverse (1120212211212), we get a palindrome (3241334331423).

The spelling of 2121122120211 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred eleven".