2101100122111 has 4 divisors (see below), whose sum is σ = 2112838111800. Its totient is φ = 2089362132424.

The previous prime is 2101100122109. The next prime is 2101100122133. The reversal of 2101100122111 is 1112210011012.

It is a happy number.

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 2101100122111 - 2¹ = 2101100122109 is a prime.

It is a super-2 number, since 2×2101100122111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101100122091 and 2101100122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101100122141) 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, 5868994576 + ... + 5868994933.

It is an arithmetic number, because the mean of its divisors is an integer number (528209527950).

Almost surely, 2^{2101100122111} is an apocalyptic number.

2101100122111 is a deficient number, since it is larger than the sum of its proper divisors (11737989689).

2101100122111 is a wasteful number, since it uses less digits than its factorization.

2101100122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11737989688.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2101100122111 its reverse (1112210011012), we get a palindrome (3213310133123).

The spelling of 2101100122111 in words is "two trillion, one hundred one billion, one hundred million, one hundred twenty-two thousand, one hundred eleven".