1201223099 has 2 divisors, whose sum is σ = 1201223100. Its totient is φ = 1201223098.

The previous prime is 1201223087. The next prime is 1201223119. The reversal of 1201223099 is 9903221021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201223099 - 2⁴ = 1201223083 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1201223059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600611549 + 600611550.

It is an arithmetic number, because the mean of its divisors is an integer number (600611550).

Almost surely, 2^1201223099 is an apocalyptic number.

1201223099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201223099 is an equidigital number, since it uses as much as digits as its factorization.

1201223099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1201223099 is about 34658.6655686569. The cubic root of 1201223099 is about 1063.0194845432.

The spelling of 1201223099 in words is "one billion, two hundred one million, two hundred twenty-three thousand, ninety-nine".