21232070115 has 8 divisors (see below), whose sum is σ = 33971312208. Its totient is φ = 11323770720.

The previous prime is 21232070107. The next prime is 21232070147. The reversal of 21232070115 is 51107023212.

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

It is not a de Polignac number, because 21232070115 - 2³ = 21232070107 is a prime.

It is a super-2 number, since 2×21232070115² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707735656 + ... + 707735685.

It is an arithmetic number, because the mean of its divisors is an integer number (4246414026).

Almost surely, 2^21232070115 is an apocalyptic number.

21232070115 is a deficient number, since it is larger than the sum of its proper divisors (12739242093).

21232070115 is a wasteful number, since it uses less digits than its factorization.

21232070115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415471349.

The product of its (nonzero) digits is 840, while the sum is 24.

Adding to 21232070115 its reverse (51107023212), we get a palindrome (72339093327).

The spelling of 21232070115 in words is "twenty-one billion, two hundred thirty-two million, seventy thousand, one hundred fifteen".