2121011010211 has 4 divisors (see below), whose sum is σ = 2121024244392. Its totient is φ = 2120997776032.

The previous prime is 2121011010199. The next prime is 2121011010229. The reversal of 2121011010211 is 1120101101212.

It is a happy number.

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 2121011010211 - 2⁵ = 2121011010179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121011010191 and 2121011010200.

It is not an unprimeable number, because it can be changed into a prime (2121011010011) 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, 6373705 + ... + 6698218.

It is an arithmetic number, because the mean of its divisors is an integer number (530256061098).

Almost surely, 2^{2121011010211} is an apocalyptic number.

2121011010211 is a deficient number, since it is larger than the sum of its proper divisors (13234181).

2121011010211 is a wasteful number, since it uses less digits than its factorization.

2121011010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13234180.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2121011010211 its reverse (1120101101212), we get a palindrome (3241112111423).

The spelling of 2121011010211 in words is "two trillion, one hundred twenty-one billion, eleven million, ten thousand, two hundred eleven".