220100121191 has 2 divisors, whose sum is σ = 220100121192. Its totient is φ = 220100121190.

The previous prime is 220100121161. The next prime is 220100121209. The reversal of 220100121191 is 191121001022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220100121191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220100121161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050060595 + 110050060596.

It is an arithmetic number, because the mean of its divisors is an integer number (110050060596).

Almost surely, 2^220100121191 is an apocalyptic number.

220100121191 is a deficient number, since it is larger than the sum of its proper divisors (1).

220100121191 is an equidigital number, since it uses as much as digits as its factorization.

220100121191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 220100121191 in words is "two hundred twenty billion, one hundred million, one hundred twenty-one thousand, one hundred ninety-one".