2122100021111 has 4 divisors (see below), whose sum is σ = 2425257166992. Its totient is φ = 1818942875232.

The previous prime is 2122100021087. The next prime is 2122100021117. The reversal of 2122100021111 is 1111200012212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2122100021111 - 2³⁰ = 2121026279287 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 (2122100021117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151578572930 + ... + 151578572943.

It is an arithmetic number, because the mean of its divisors is an integer number (606314291748).

Almost surely, 2^{2122100021111} is an apocalyptic number.

2122100021111 is a deficient number, since it is larger than the sum of its proper divisors (303157145881).

2122100021111 is an equidigital number, since it uses as much as digits as its factorization.

2122100021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303157145880.

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

Adding to 2122100021111 its reverse (1111200012212), we get a palindrome (3233300033323).

The spelling of 2122100021111 in words is "two trillion, one hundred twenty-two billion, one hundred million, twenty-one thousand, one hundred eleven".