2121010010011 has 4 divisors (see below), whose sum is σ = 2121098302800. Its totient is φ = 2120921717224.

The previous prime is 2121010009973. The next prime is 2121010010039. The reversal of 2121010010011 is 1100100101212.

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 2121010010011 - 2¹⁹ = 2121009485723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121010010011.

It is not an unprimeable number, because it can be changed into a prime (2121010010611) 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, 44110351 + ... + 44158408.

It is an arithmetic number, because the mean of its divisors is an integer number (530274575700).

Almost surely, 2^{2121010010011} is an apocalyptic number.

2121010010011 is a deficient number, since it is larger than the sum of its proper divisors (88292789).

2121010010011 is an equidigital number, since it uses as much as digits as its factorization.

2121010010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88292788.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2121010010011 its reverse (1100100101212), we get a palindrome (3221110111223).

The spelling of 2121010010011 in words is "two trillion, one hundred twenty-one billion, ten million, ten thousand, eleven".