2101112121111 has 8 divisors (see below), whose sum is σ = 2802036610560. Its totient is φ = 1400464522872.

The previous prime is 2101112121107. The next prime is 2101112121151. The reversal of 2101112121111 is 1111212111012.

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

It is not a de Polignac number, because 2101112121111 - 2² = 2101112121107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101112121151) 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, 69205095 + ... + 69235448.

It is an arithmetic number, because the mean of its divisors is an integer number (350254576320).

Almost surely, 2^{2101112121111} is an apocalyptic number.

2101112121111 is a deficient number, since it is larger than the sum of its proper divisors (700924489449).

2101112121111 is a wasteful number, since it uses less digits than its factorization.

2101112121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138445605.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2101112121111 its reverse (1111212111012), we get a palindrome (3212324232123).

The spelling of 2101112121111 in words is "two trillion, one hundred one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred eleven".