2201921879 has 2 divisors, whose sum is σ = 2201921880. Its totient is φ = 2201921878.

The previous prime is 2201921861. The next prime is 2201921881. The reversal of 2201921879 is 9781291022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201921879 is a prime.

It is a super-2 number, since 2×2201921879² = 9696919922437781282, which contains 22 as substring.

Together with 2201921881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201921279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100960939 + 1100960940.

It is an arithmetic number, because the mean of its divisors is an integer number (1100960940).

Almost surely, 2^2201921879 is an apocalyptic number.

2201921879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201921879 is an equidigital number, since it uses as much as digits as its factorization.

2201921879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 2201921879 is about 46924.6404248344. The cubic root of 2201921879 is about 1300.9700607726.

The spelling of 2201921879 in words is "two billion, two hundred one million, nine hundred twenty-one thousand, eight hundred seventy-nine".