200111220973 has 2 divisors, whose sum is σ = 200111220974. Its totient is φ = 200111220972.

The previous prime is 200111220943. The next prime is 200111220979. The reversal of 200111220973 is 379022111002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189605380969 + 10505840004 = 435437^2 + 102498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200111220973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200111220979) 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, 100055610486 + 100055610487.

It is an arithmetic number, because the mean of its divisors is an integer number (100055610487).

Almost surely, 2^200111220973 is an apocalyptic number.

It is an amenable number.

200111220973 is a deficient number, since it is larger than the sum of its proper divisors (1).

200111220973 is an equidigital number, since it uses as much as digits as its factorization.

200111220973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 200111220973 its reverse (379022111002), we get a palindrome (579133331975).

The spelling of 200111220973 in words is "two hundred billion, one hundred eleven million, two hundred twenty thousand, nine hundred seventy-three".