21102242999 has 8 divisors (see below), whose sum is σ = 21327614928. Its totient is φ = 20877193600.

The previous prime is 21102242977. The next prime is 21102243007. The reversal of 21102242999 is 99924220112.

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 21102242999 - 2²⁰ = 21101194423 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 (21152242999) 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, 52079 + ... + 211935.

It is an arithmetic number, because the mean of its divisors is an integer number (2665951866).

Almost surely, 2^21102242999 is an apocalyptic number.

21102242999 is a deficient number, since it is larger than the sum of its proper divisors (225371929).

21102242999 is a wasteful number, since it uses less digits than its factorization.

21102242999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161265.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 21102242999 in words is "twenty-one billion, one hundred two million, two hundred forty-two thousand, nine hundred ninety-nine".