220201120991 has 2 divisors, whose sum is σ = 220201120992. Its totient is φ = 220201120990.

The previous prime is 220201120973. The next prime is 220201121071. The reversal of 220201120991 is 199021102022.

220201120991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201120991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201120091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100560495 + 110100560496.

It is an arithmetic number, because the mean of its divisors is an integer number (110100560496).

Almost surely, 2^220201120991 is an apocalyptic number.

220201120991 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201120991 is an equidigital number, since it uses as much as digits as its factorization.

220201120991 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 220201120991 in words is "two hundred twenty billion, two hundred one million, one hundred twenty thousand, nine hundred ninety-one".