1202212009 has 2 divisors, whose sum is σ = 1202212010. Its totient is φ = 1202212008.

The previous prime is 1202212007. The next prime is 1202212031. The reversal of 1202212009 is 9002122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772562025 + 429649984 = 27795^2 + 20728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202212009 - 2¹ = 1202212007 is a prime.

It is a super-3 number, since 3×1202212009³ (a number of 28 digits) contains 333 as substring.

Together with 1202212007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1202212007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601106004 + 601106005.

It is an arithmetic number, because the mean of its divisors is an integer number (601106005).

Almost surely, 2^1202212009 is an apocalyptic number.

It is an amenable number.

1202212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202212009 is an equidigital number, since it uses as much as digits as its factorization.

1202212009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1202212009 is about 34672.9290513507. The cubic root of 1202212009 is about 1063.3111157023.

The spelling of 1202212009 in words is "one billion, two hundred two million, two hundred twelve thousand, nine".