2121000212111 has 8 divisors (see below), whose sum is σ = 2388457717248. Its totient is φ = 1865982591000.

The previous prime is 2121000212039. The next prime is 2121000212113. The reversal of 2121000212111 is 1112120001212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121000212111 - 2³⁰ = 2119926470287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121000212113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109970645 + ... + 3109971326.

It is an arithmetic number, because the mean of its divisors is an integer number (298557214656).

Almost surely, 2^{2121000212111} is an apocalyptic number.

2121000212111 is a deficient number, since it is larger than the sum of its proper divisors (267457505137).

2121000212111 is a wasteful number, since it uses less digits than its factorization.

2121000212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219942013.

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

Adding to 2121000212111 its reverse (1112120001212), we get a palindrome (3233120213323).

The spelling of 2121000212111 in words is "two trillion, one hundred twenty-one billion, two hundred twelve thousand, one hundred eleven".