22120111200101 has 4 divisors (see below), whose sum is σ = 22125810794604. Its totient is φ = 22114411605600.

The previous prime is 22120111200091. The next prime is 22120111200197. The reversal of 22120111200101 is 10100211102122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12333230896900 + 9786880303201 = 3511870^2 + 3128399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120111200101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120111200001) 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, 2849791430 + ... + 2849799191.

It is an arithmetic number, because the mean of its divisors is an integer number (5531452698651).

Almost surely, 2^{22120111200101} is an apocalyptic number.

It is an amenable number.

22120111200101 is a deficient number, since it is larger than the sum of its proper divisors (5699594503).

22120111200101 is an equidigital number, since it uses as much as digits as its factorization.

22120111200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699594502.

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

Adding to 22120111200101 its reverse (10100211102122), we get a palindrome (32220322302223).

The spelling of 22120111200101 in words is "twenty-two trillion, one hundred twenty billion, one hundred eleven million, two hundred thousand, one hundred one".