2121122310011 has 4 divisors (see below), whose sum is σ = 2121173410032. Its totient is φ = 2121071209992.

The previous prime is 2121122309993. The next prime is 2121122310053. The reversal of 2121122310011 is 1100132211212.

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 2121122310011 - 2¹⁴ = 2121122293627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121122310911) 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, 25487696 + ... + 25570781.

It is an arithmetic number, because the mean of its divisors is an integer number (530293352508).

Almost surely, 2^{2121122310011} is an apocalyptic number.

2121122310011 is a deficient number, since it is larger than the sum of its proper divisors (51100021).

2121122310011 is an equidigital number, since it uses as much as digits as its factorization.

2121122310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51100020.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2121122310011 its reverse (1100132211212), we get a palindrome (3221254521223).

The spelling of 2121122310011 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, three hundred ten thousand, eleven".