21320775235 has 8 divisors (see below), whose sum is σ = 26931505680. Its totient is φ = 16158903264.

The previous prime is 21320775173. The next prime is 21320775277. The reversal of 21320775235 is 53257702312.

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 21320775235 - 2⁷ = 21320775107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21320775194 and 21320775203.

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, 112214512 + ... + 112214701.

It is an arithmetic number, because the mean of its divisors is an integer number (3366438210).

Almost surely, 2^21320775235 is an apocalyptic number.

21320775235 is a deficient number, since it is larger than the sum of its proper divisors (5610730445).

21320775235 is a wasteful number, since it uses less digits than its factorization.

21320775235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224429237.

The product of its (nonzero) digits is 88200, while the sum is 37.

It can be divided in two parts, 2132077 and 5235, that added together give a palindrome (2137312).

The spelling of 21320775235 in words is "twenty-one billion, three hundred twenty million, seven hundred seventy-five thousand, two hundred thirty-five".