220011923 has 2 divisors, whose sum is σ = 220011924. Its totient is φ = 220011922.

The previous prime is 220011901. The next prime is 220011931. The reversal of 220011923 is 329110022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220011923 - 2⁸ = 220011667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220011895 and 220011904.

It is not a weakly prime, because it can be changed into another prime (220011973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005961 + 110005962.

It is an arithmetic number, because the mean of its divisors is an integer number (110005962).

Almost surely, 2^220011923 is an apocalyptic number.

220011923 is a deficient number, since it is larger than the sum of its proper divisors (1).

220011923 is an equidigital number, since it uses as much as digits as its factorization.

220011923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 220011923 is about 14832.7988929939. The cubic root of 220011923 is about 603.6919790728.

Adding to 220011923 its reverse (329110022), we get a palindrome (549121945).

The spelling of 220011923 in words is "two hundred twenty million, eleven thousand, nine hundred twenty-three".