21455326101 has 8 divisors (see below), whose sum is σ = 31207747104. Its totient is φ = 13003227920.

The previous prime is 21455326043. The next prime is 21455326133. The reversal of 21455326101 is 10162355412.

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 21455326101 - 2⁶ = 21455326037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21455326171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325080666 + ... + 325080731.

It is an arithmetic number, because the mean of its divisors is an integer number (3900968388).

Almost surely, 2^21455326101 is an apocalyptic number.

It is an amenable number.

21455326101 is a deficient number, since it is larger than the sum of its proper divisors (9752421003).

21455326101 is a wasteful number, since it uses less digits than its factorization.

21455326101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650161411.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 21455326101 in words is "twenty-one billion, four hundred fifty-five million, three hundred twenty-six thousand, one hundred one".