215451201099 has 8 divisors (see below), whose sum is σ = 289334946880. Its totient is φ = 142600794696.

The previous prime is 215451201079. The next prime is 215451201103. The reversal of 215451201099 is 990102154512.

It is a happy number.

215451201099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215451201099 - 2¹⁶ = 215451135563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215451201079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258334357 + ... + 258335190.

It is an arithmetic number, because the mean of its divisors is an integer number (36166868360).

Almost surely, 2^215451201099 is an apocalyptic number.

215451201099 is a deficient number, since it is larger than the sum of its proper divisors (73883745781).

215451201099 is a wasteful number, since it uses less digits than its factorization.

215451201099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516669689.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 215451201099 in words is "two hundred fifteen billion, four hundred fifty-one million, two hundred one thousand, ninety-nine".