1204221973 has 2 divisors, whose sum is σ = 1204221974. Its totient is φ = 1204221972.

The previous prime is 1204221937. The next prime is 1204222027. The reversal of 1204221973 is 3791224021.

Together with previous prime (1204221937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061586724 + 142635249 = 32582^2 + 11943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204221973 - 2¹³ = 1204213781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204821973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602110986 + 602110987.

It is an arithmetic number, because the mean of its divisors is an integer number (602110987).

Almost surely, 2^1204221973 is an apocalyptic number.

It is an amenable number.

1204221973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204221973 is an equidigital number, since it uses as much as digits as its factorization.

1204221973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1204221973 is about 34701.9015761384. The cubic root of 1204221973 is about 1063.9033648480.

Adding to 1204221973 its reverse (3791224021), we get a palindrome (4995445994).

The spelling of 1204221973 in words is "one billion, two hundred four million, two hundred twenty-one thousand, nine hundred seventy-three".