1200221423 has 2 divisors, whose sum is σ = 1200221424. Its totient is φ = 1200221422.

The previous prime is 1200221419. The next prime is 1200221453. The reversal of 1200221423 is 3241220021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200221423 - 2² = 1200221419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200221453) 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, 600110711 + 600110712.

It is an arithmetic number, because the mean of its divisors is an integer number (600110712).

Almost surely, 2^1200221423 is an apocalyptic number.

1200221423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221423 is an equidigital number, since it uses as much as digits as its factorization.

1200221423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1200221423 is about 34644.2119696783. The cubic root of 1200221423 is about 1062.7239254542.

Adding to 1200221423 its reverse (3241220021), we get a palindrome (4441441444).

The spelling of 1200221423 in words is "one billion, two hundred million, two hundred twenty-one thousand, four hundred twenty-three".