20112101222101 has 6 divisors (see below), whose sum is σ = 23395709584950. Its totient is φ = 17238943904616.

The previous prime is 20112101222053. The next prime is 20112101222117. The reversal of 20112101222101 is 10122210121102.

It can be written as a sum of positive squares in only one way, i.e., 14127081477201 + 5985019744900 = 3758601^2 + 2446430^2 .

It is not a de Polignac number, because 20112101222101 - 2⁷ = 20112101221973 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 (20112101222131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205225522626 + ... + 205225522723.

It is an arithmetic number, because the mean of its divisors is an integer number (3899284930825).

Almost surely, 2^{20112101222101} is an apocalyptic number.

It is an amenable number.

20112101222101 is a deficient number, since it is larger than the sum of its proper divisors (3283608362849).

20112101222101 is an equidigital number, since it uses as much as digits as its factorization.

20112101222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410451045363 (or 410451045356 counting only the distinct ones).

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

Adding to 20112101222101 its reverse (10122210121102), we get a palindrome (30234311343203).

The spelling of 20112101222101 in words is "twenty trillion, one hundred twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred one".