20200021122194 has 4 divisors (see below), whose sum is σ = 30300031683294. Its totient is φ = 10100010561096.

The previous prime is 20200021122167. The next prime is 20200021122199. The reversal of 20200021122194 is 49122112000202.

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., 20153500240225 + 46520881969 = 4489265^2 + 215687^2 .

It is not an unprimeable number, because it can be changed into a prime (20200021122199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050005280547 + ... + 5050005280550.

Almost surely, 2^{20200021122194} is an apocalyptic number.

20200021122194 is a deficient number, since it is larger than the sum of its proper divisors (10100010561100).

20200021122194 is a wasteful number, since it uses less digits than its factorization.

20200021122194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100010561099.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20200021122194 its reverse (49122112000202), we get a palindrome (69322133122396).

The spelling of 20200021122194 in words is "twenty trillion, two hundred billion, twenty-one million, one hundred twenty-two thousand, one hundred ninety-four".