2122101222111 has 24 divisors (see below), whose sum is σ = 3315213968976. Its totient is φ = 1300303670400.

The previous prime is 2122101222103. The next prime is 2122101222179. The reversal of 2122101222111 is 1112221012212.

2122101222111 is a `hidden beast` number, since 212 + 210 + 12 + 221 + 11 = 666.

It is not a de Polignac number, because 2122101222111 - 2³ = 2122101222103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122101222181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38894665 + ... + 38949186.

It is an arithmetic number, because the mean of its divisors is an integer number (138133915374).

Almost surely, 2^{2122101222111} is an apocalyptic number.

2122101222111 is a deficient number, since it is larger than the sum of its proper divisors (1193112746865).

2122101222111 is a wasteful number, since it uses less digits than its factorization.

2122101222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77844103 (or 77844100 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2122101222111 its reverse (1112221012212), we get a palindrome (3234322234323).

The spelling of 2122101222111 in words is "two trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty-two thousand, one hundred eleven".