10221539999 has 8 divisors (see below), whose sum is σ = 11172684240. Its totient is φ = 9274048000.

The previous prime is 10221539929. The next prime is 10221540023. The reversal of 10221539999 is 99993512201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221539999 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 (10221539929) 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, 907202 + ... + 918399.

It is an arithmetic number, because the mean of its divisors is an integer number (1396585530).

Almost surely, 2^10221539999 is an apocalyptic number.

10221539999 is a deficient number, since it is larger than the sum of its proper divisors (951144241).

10221539999 is a wasteful number, since it uses less digits than its factorization.

10221539999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826121.

The product of its (nonzero) digits is 393660, while the sum is 50.

The spelling of 10221539999 in words is "ten billion, two hundred twenty-one million, five hundred thirty-nine thousand, nine hundred ninety-nine".