21265132201445 has 8 divisors (see below), whose sum is σ = 27837991245600. Its totient is φ = 15465550691920.

The previous prime is 21265132201399. The next prime is 21265132201459. The reversal of 21265132201445 is 54410223156212.

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

It is not a de Polignac number, because 21265132201445 - 2⁸ = 21265132201189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21265132201399 and 21265132201408.

It is a congruent number.

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, 193319383595 + ... + 193319383704.

It is an arithmetic number, because the mean of its divisors is an integer number (3479748905700).

Almost surely, 2^{21265132201445} is an apocalyptic number.

It is an amenable number.

21265132201445 is a deficient number, since it is larger than the sum of its proper divisors (6572859044155).

21265132201445 is a wasteful number, since it uses less digits than its factorization.

21265132201445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386638767315.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 21265132201445 its reverse (54410223156212), we get a palindrome (75675355357657).

The spelling of 21265132201445 in words is "twenty-one trillion, two hundred sixty-five billion, one hundred thirty-two million, two hundred one thousand, four hundred forty-five".