1201022489 has 2 divisors, whose sum is σ = 1201022490. Its totient is φ = 1201022488.

The previous prime is 1201022461. The next prime is 1201022513. The reversal of 1201022489 is 9842201021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 917605264 + 283417225 = 30292^2 + 16835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201022489 - 2⁸ = 1201022233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201021489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600511244 + 600511245.

It is an arithmetic number, because the mean of its divisors is an integer number (600511245).

Almost surely, 2^1201022489 is an apocalyptic number.

It is an amenable number.

1201022489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201022489 is an equidigital number, since it uses as much as digits as its factorization.

1201022489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1201022489 is about 34655.7713663973. The cubic root of 1201022489 is about 1062.9603048034.

The spelling of 1201022489 in words is "one billion, two hundred one million, twenty-two thousand, four hundred eighty-nine".