2021122100111 has 8 divisors (see below), whose sum is σ = 2021756650704. Its totient is φ = 2020487644800.

The previous prime is 2021122100077. The next prime is 2021122100171. The reversal of 2021122100111 is 1110012211202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021122100111 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 (2021122100171) 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, 75579335 + ... + 75606071.

It is an arithmetic number, because the mean of its divisors is an integer number (252719581338).

Almost surely, 2^{2021122100111} is an apocalyptic number.

2021122100111 is a deficient number, since it is larger than the sum of its proper divisors (634550593).

2021122100111 is a wasteful number, since it uses less digits than its factorization.

2021122100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47641.

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

Adding to 2021122100111 its reverse (1110012211202), we get a palindrome (3131134311313).

The spelling of 2021122100111 in words is "two trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, one hundred eleven".