2421201109 has 2 divisors, whose sum is σ = 2421201110. Its totient is φ = 2421201108.

The previous prime is 2421201061. The next prime is 2421201131. The reversal of 2421201109 is 9011021242.

It is an a-pointer prime, because the next prime (2421201131) can be obtained adding 2421201109 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2173610884 + 247590225 = 46622^2 + 15735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421201109 - 2¹⁵ = 2421168341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2421201109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421201169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210600554 + 1210600555.

It is an arithmetic number, because the mean of its divisors is an integer number (1210600555).

Almost surely, 2^2421201109 is an apocalyptic number.

It is an amenable number.

2421201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421201109 is an equidigital number, since it uses as much as digits as its factorization.

2421201109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2421201109 is about 49205.7019968215. The cubic root of 2421201109 is about 1342.7967704362.

The spelling of 2421201109 in words is "two billion, four hundred twenty-one million, two hundred one thousand, one hundred nine".