2101202221111 has 32 divisors (see below), whose sum is σ = 2451507236352. Its totient is φ = 1763706821760.

The previous prime is 2101202221099. The next prime is 2101202221117. The reversal of 2101202221111 is 1111222021012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101202221111 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 (2101202221117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100299940 + ... + 100320886.

It is an arithmetic number, because the mean of its divisors is an integer number (76609601136).

Almost surely, 2^{2101202221111} is an apocalyptic number.

2101202221111 is a deficient number, since it is larger than the sum of its proper divisors (350305015241).

2101202221111 is a wasteful number, since it uses less digits than its factorization.

2101202221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22039.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2101202221111 its reverse (1111222021012), we get a palindrome (3212424242123).

The spelling of 2101202221111 in words is "two trillion, one hundred one billion, two hundred two million, two hundred twenty-one thousand, one hundred eleven".