2101222111111 has 8 divisors (see below), whose sum is σ = 2130759624704. Its totient is φ = 2071887604920.

The previous prime is 2101222111097. The next prime is 2101222111127. The reversal of 2101222111111 is 1111112221012.

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

It is a cyclic number.

It is not a de Polignac number, because 2101222111111 - 2¹³ = 2101222102919 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 (2101222111181) 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, 50731005 + ... + 50772406.

It is an arithmetic number, because the mean of its divisors is an integer number (266344953088).

Almost surely, 2^{2101222111111} is an apocalyptic number.

2101222111111 is a deficient number, since it is larger than the sum of its proper divisors (29537513593).

2101222111111 is a wasteful number, since it uses less digits than its factorization.

2101222111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101503701.

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

Adding to 2101222111111 its reverse (1111112221012), we get a palindrome (3212334332123).

The spelling of 2101222111111 in words is "two trillion, one hundred one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred eleven".