1200221287 has 2 divisors, whose sum is σ = 1200221288. Its totient is φ = 1200221286.

The previous prime is 1200221147. The next prime is 1200221291. The reversal of 1200221287 is 7821220021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200221287 - 2¹¹ = 1200219239 is a prime.

It is a super-2 number, since 2×1200221287² = 2881062275535872738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200221587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110643 + 600110644.

It is an arithmetic number, because the mean of its divisors is an integer number (600110644).

Almost surely, 2^1200221287 is an apocalyptic number.

1200221287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200221287 is an equidigital number, since it uses as much as digits as its factorization.

1200221287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1200221287 is about 34644.2100068684. The cubic root of 1200221287 is about 1062.7238853142.

The spelling of 1200221287 in words is "one billion, two hundred million, two hundred twenty-one thousand, two hundred eighty-seven".