2121302031211 has 48 divisors (see below), whose sum is σ = 2468528092800. Its totient is φ = 1806671865600.

The previous prime is 2121302031209. The next prime is 2121302031217. The reversal of 2121302031211 is 1121302031212.

It is not a de Polignac number, because 2121302031211 - 2¹ = 2121302031209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121302031217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51343840 + ... + 51385138.

It is an arithmetic number, because the mean of its divisors is an integer number (51427668600).

Almost surely, 2^{2121302031211} is an apocalyptic number.

2121302031211 is a deficient number, since it is larger than the sum of its proper divisors (347226061589).

2121302031211 is a wasteful number, since it uses less digits than its factorization.

2121302031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41528 (or 41497 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121302031211 its reverse (1121302031212), we get a palindrome (3242604062423).

Subtracting from 2121302031211 its reverse (1121302031212), we obtain a palindrome (999999999999).

The spelling of 2121302031211 in words is "two trillion, one hundred twenty-one billion, three hundred two million, thirty-one thousand, two hundred eleven".