21201331199 has 8 divisors (see below), whose sum is σ = 21993357120. Its totient is φ = 20422396800.

The previous prime is 21201331141. The next prime is 21201331211. The reversal of 21201331199 is 99113310212.

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 not a de Polignac number, because 21201331199 - 2¹⁶ = 21201265663 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 (21201031199) 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, 3269582 + ... + 3276059.

It is an arithmetic number, because the mean of its divisors is an integer number (2749169640).

Almost surely, 2^21201331199 is an apocalyptic number.

21201331199 is a deficient number, since it is larger than the sum of its proper divisors (792025921).

21201331199 is an equidigital number, since it uses as much as digits as its factorization.

21201331199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6545761.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 21201331199 in words is "twenty-one billion, two hundred one million, three hundred thirty-one thousand, one hundred ninety-nine".