2121200022011 has 16 divisors (see below), whose sum is σ = 2574585100800. Its totient is φ = 1706050304640.

The previous prime is 2121200022001. The next prime is 2121200022017. The reversal of 2121200022011 is 1102200021212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121200022011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121200022017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26886911 + ... + 26965688.

It is an arithmetic number, because the mean of its divisors is an integer number (160911568800).

Almost surely, 2^{2121200022011} is an apocalyptic number.

2121200022011 is a deficient number, since it is larger than the sum of its proper divisors (453385078789).

2121200022011 is a wasteful number, since it uses less digits than its factorization.

2121200022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53852954.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121200022011 its reverse (1102200021212), we get a palindrome (3223400043223).

The spelling of 2121200022011 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty-two thousand, eleven".