100200222001991 has 2 divisors, whose sum is σ = 100200222001992. Its totient is φ = 100200222001990.

The previous prime is 100200222001981. The next prime is 100200222002003. The reversal of 100200222001991 is 199100222002001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100200222001991 - 2⁶ = 100200222001927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100200222001921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50100111000995 + 50100111000996.

It is an arithmetic number, because the mean of its divisors is an integer number (50100111000996).

Almost surely, 2^{100200222001991} is an apocalyptic number.

100200222001991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100200222001991 is an equidigital number, since it uses as much as digits as its factorization.

100200222001991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

Adding to 100200222001991 its reverse (199100222002001), we get a palindrome (299300444003992).

The spelling of 100200222001991 in words is "one hundred trillion, two hundred billion, two hundred twenty-two million, one thousand, nine hundred ninety-one".