1200401099 has 2 divisors, whose sum is σ = 1200401100. Its totient is φ = 1200401098.

The previous prime is 1200401063. The next prime is 1200401113. The reversal of 1200401099 is 9901040021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200401099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200401039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600200549 + 600200550.

It is an arithmetic number, because the mean of its divisors is an integer number (600200550).

Almost surely, 2^1200401099 is an apocalyptic number.

1200401099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200401099 is an equidigital number, since it uses as much as digits as its factorization.

1200401099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1200401099 is about 34646.8050330763. The cubic root of 1200401099 is about 1062.7769535740.

The spelling of 1200401099 in words is "one billion, two hundred million, four hundred one thousand, ninety-nine".