2102201110111 has 4 divisors (see below), whose sum is σ = 2120804659872. Its totient is φ = 2083597560352.

The previous prime is 2102201110081. The next prime is 2102201110123. The reversal of 2102201110111 is 1110111022012.

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 2102201110111 - 2¹³ = 2102201101919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102201110091 and 2102201110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102201110511) 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, 9301774711 + ... + 9301774936.

It is an arithmetic number, because the mean of its divisors is an integer number (530201164968).

Almost surely, 2^{2102201110111} is an apocalyptic number.

2102201110111 is a deficient number, since it is larger than the sum of its proper divisors (18603549761).

2102201110111 is a wasteful number, since it uses less digits than its factorization.

2102201110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18603549760.

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

Adding to 2102201110111 its reverse (1110111022012), we get a palindrome (3212312132123).

The spelling of 2102201110111 in words is "two trillion, one hundred two billion, two hundred one million, one hundred ten thousand, one hundred eleven".