22101121210111 has 4 divisors (see below), whose sum is σ = 22101132779224. Its totient is φ = 22101109641000.

The previous prime is 22101121210097. The next prime is 22101121210141. The reversal of 22101121210111 is 11101212110122.

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 not a de Polignac number, because 22101121210111 - 2¹⁷ = 22101121079039 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 (22101121210141) 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, 2163405 + ... + 6991606.

It is an arithmetic number, because the mean of its divisors is an integer number (5525283194806).

Almost surely, 2^{22101121210111} is an apocalyptic number.

22101121210111 is a deficient number, since it is larger than the sum of its proper divisors (11569113).

22101121210111 is an equidigital number, since it uses as much as digits as its factorization.

22101121210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569112.

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

Adding to 22101121210111 its reverse (11101212110122), we get a palindrome (33202333320233).

The spelling of 22101121210111 in words is "twenty-two trillion, one hundred one billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".