1221002059 has 2 divisors, whose sum is σ = 1221002060. Its totient is φ = 1221002058.

The previous prime is 1221002039. The next prime is 1221002063. The reversal of 1221002059 is 9502001221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221002059 - 2⁹ = 1221001547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221002009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610501029 + 610501030.

It is an arithmetic number, because the mean of its divisors is an integer number (610501030).

Almost surely, 2^1221002059 is an apocalyptic number.

1221002059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221002059 is an equidigital number, since it uses as much as digits as its factorization.

1221002059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1221002059 is about 34942.8398817268. The cubic root of 1221002059 is about 1068.8221992240.

The spelling of 1221002059 in words is "one billion, two hundred twenty-one million, two thousand, fifty-nine".