1200221023 has 2 divisors, whose sum is σ = 1200221024. Its totient is φ = 1200221022.

The previous prime is 1200220951. The next prime is 1200221027. The reversal of 1200221023 is 3201220021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3201220021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200221023 - 2²⁵ = 1166666591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200220994 and 1200221012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200221027) 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, 600110511 + 600110512.

It is an arithmetic number, because the mean of its divisors is an integer number (600110512).

Almost surely, 2^1200221023 is an apocalyptic number.

1200221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221023 is an equidigital number, since it uses as much as digits as its factorization.

1200221023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200221023 is about 34644.2061967077. The cubic root of 1200221023 is about 1062.7238073955.

Adding to 1200221023 its reverse (3201220021), we get a palindrome (4401441044).

The spelling of 1200221023 in words is "one billion, two hundred million, two hundred twenty-one thousand, twenty-three".