2101210022111 has 4 divisors (see below), whose sum is σ = 2101212957432. Its totient is φ = 2101207086792.

The previous prime is 2101210022101. The next prime is 2101210022113. The reversal of 2101210022111 is 1112200121012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101210022111 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 (2101210022113) 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, 389105 + ... + 2086581.

It is an arithmetic number, because the mean of its divisors is an integer number (525303239358).

Almost surely, 2^{2101210022111} is an apocalyptic number.

2101210022111 is a deficient number, since it is larger than the sum of its proper divisors (2935321).

2101210022111 is a wasteful number, since it uses less digits than its factorization.

2101210022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935320.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101210022111 its reverse (1112200121012), we get a palindrome (3213410143123).

The spelling of 2101210022111 in words is "two trillion, one hundred one billion, two hundred ten million, twenty-two thousand, one hundred eleven".