21201485399 has 8 divisors (see below), whose sum is σ = 22165602432. Its totient is φ = 20240894520.

The previous prime is 21201485381. The next prime is 21201485401. The reversal of 21201485399 is 99358410212.

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 21201485399 - 2²⁴ = 21184708183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201487399) 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, 869237 + ... + 893294.

It is an arithmetic number, because the mean of its divisors is an integer number (2770700304).

Almost surely, 2^21201485399 is an apocalyptic number.

21201485399 is a deficient number, since it is larger than the sum of its proper divisors (964117033).

21201485399 is a wasteful number, since it uses less digits than its factorization.

21201485399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763077.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 21201485399 in words is "twenty-one billion, two hundred one million, four hundred eighty-five thousand, three hundred ninety-nine".