21132236607 has 16 divisors (see below), whose sum is σ = 28241913600. Its totient is φ = 14055392000.

The previous prime is 21132236603. The next prime is 21132236633. The reversal of 21132236607 is 70663223112.

It is a cyclic number.

It is not a de Polignac number, because 21132236607 - 2² = 21132236603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132236603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3736732 + ... + 3742382.

It is an arithmetic number, because the mean of its divisors is an integer number (1765119600).

Almost surely, 2^21132236607 is an apocalyptic number.

21132236607 is a deficient number, since it is larger than the sum of its proper divisors (7109676993).

21132236607 is a wasteful number, since it uses less digits than its factorization.

21132236607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8334.

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 21132236607 its reverse (70663223112), we get a palindrome (91795459719).

The spelling of 21132236607 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirty-six thousand, six hundred seven".