2121102210011 has 4 divisors (see below), whose sum is σ = 2121804797400. Its totient is φ = 2120399622624.

The previous prime is 2121102209981. The next prime is 2121102210013. The reversal of 2121102210011 is 1100122011212.

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 2121102210011 - 2¹⁰ = 2121102208987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121102210013) 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, 351289166 + ... + 351295203.

It is an arithmetic number, because the mean of its divisors is an integer number (530451199350).

Almost surely, 2^{2121102210011} is an apocalyptic number.

2121102210011 is a deficient number, since it is larger than the sum of its proper divisors (702587389).

2121102210011 is an equidigital number, since it uses as much as digits as its factorization.

2121102210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702587388.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121102210011 its reverse (1100122011212), we get a palindrome (3221224221223).

The spelling of 2121102210011 in words is "two trillion, one hundred twenty-one billion, one hundred two million, two hundred ten thousand, eleven".