20112101222194 has 4 divisors (see below), whose sum is σ = 30168151833294. Its totient is φ = 10056050611096.

The previous prime is 20112101222189. The next prime is 20112101222197. The reversal of 20112101222194 is 49122210121102.

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

It can be written as a sum of positive squares in only one way, i.e., 17278046815969 + 2834054406225 = 4156687^2 + 1683465^2 .

It is not an unprimeable number, because it can be changed into a prime (20112101222197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028025305547 + ... + 5028025305550.

Almost surely, 2^{20112101222194} is an apocalyptic number.

20112101222194 is a deficient number, since it is larger than the sum of its proper divisors (10056050611100).

20112101222194 is a wasteful number, since it uses less digits than its factorization.

20112101222194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056050611099.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 20112101222194 its reverse (49122210121102), we get a palindrome (69234311343296).

The spelling of 20112101222194 in words is "twenty trillion, one hundred twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred ninety-four".