2120210012111 has 4 divisors (see below), whose sum is σ = 2120213709000. Its totient is φ = 2120206315224.

The previous prime is 2120210012099. The next prime is 2120210012147. The reversal of 2120210012111 is 1112100120212.

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 2120210012111 - 2³⁸ = 1845332105167 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 (2120210012411) 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, 783761 + ... + 2203338.

It is an arithmetic number, because the mean of its divisors is an integer number (530053427250).

Almost surely, 2^{2120210012111} is an apocalyptic number.

2120210012111 is a deficient number, since it is larger than the sum of its proper divisors (3696889).

2120210012111 is an equidigital number, since it uses as much as digits as its factorization.

2120210012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696888.

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

Adding to 2120210012111 its reverse (1112100120212), we get a palindrome (3232310132323).

The spelling of 2120210012111 in words is "two trillion, one hundred twenty billion, two hundred ten million, twelve thousand, one hundred eleven".