1203212089 has 2 divisors, whose sum is σ = 1203212090. Its totient is φ = 1203212088.

The previous prime is 1203212071. The next prime is 1203212119. The reversal of 1203212089 is 9802123021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974688400 + 228523689 = 31220^2 + 15117^2 .

It is an emirp because it is prime and its reverse (9802123021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203212089 - 2⁵ = 1203212057 is a prime.

It is a super-2 number, since 2×1203212089² = 2895438662231487842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1203212189) 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, 601606044 + 601606045.

It is an arithmetic number, because the mean of its divisors is an integer number (601606045).

Almost surely, 2^1203212089 is an apocalyptic number.

It is an amenable number.

1203212089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203212089 is an equidigital number, since it uses as much as digits as its factorization.

1203212089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1203212089 is about 34687.3476789448. The cubic root of 1203212089 is about 1063.6058783124.

The spelling of 1203212089 in words is "one billion, two hundred three million, two hundred twelve thousand, eighty-nine".