21115326235 has 8 divisors (see below), whose sum is σ = 25352807040. Its totient is φ = 16882650624.

The previous prime is 21115326163. The next prime is 21115326247. The reversal of 21115326235 is 53262351112.

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

It is a cyclic number.

It is not a de Polignac number, because 21115326235 - 2¹³ = 21115318043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21115326197 and 21115326206.

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, 1191622 + ... + 1209211.

It is an arithmetic number, because the mean of its divisors is an integer number (3169100880).

Almost surely, 2^21115326235 is an apocalyptic number.

21115326235 is a deficient number, since it is larger than the sum of its proper divisors (4237480805).

21115326235 is a wasteful number, since it uses less digits than its factorization.

21115326235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402597.

The product of its digits is 10800, while the sum is 31.

Adding to 21115326235 its reverse (53262351112), we get a palindrome (74377677347).

The spelling of 21115326235 in words is "twenty-one billion, one hundred fifteen million, three hundred twenty-six thousand, two hundred thirty-five".