1223204051 has 4 divisors (see below), whose sum is σ = 1223952912. Its totient is φ = 1222455192.

The previous prime is 1223204041. The next prime is 1223204057. The reversal of 1223204051 is 1504023221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223204051 - 2²² = 1219009747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223204057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371975 + ... + 375248.

It is an arithmetic number, because the mean of its divisors is an integer number (305988228).

Almost surely, 2^1223204051 is an apocalyptic number.

1223204051 is a deficient number, since it is larger than the sum of its proper divisors (748861).

1223204051 is an equidigital number, since it uses as much as digits as its factorization.

1223204051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748860.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1223204051 is about 34974.3341752205. The cubic root of 1223204051 is about 1069.4643287811.

Adding to 1223204051 its reverse (1504023221), we get a palindrome (2727227272).

The spelling of 1223204051 in words is "one billion, two hundred twenty-three million, two hundred four thousand, fifty-one".