21220002111199 has 4 divisors (see below), whose sum is σ = 21951726321960. Its totient is φ = 20488277900440.

The previous prime is 21220002111167. The next prime is 21220002111221. The reversal of 21220002111199 is 99111120002212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21220002111199 - 2⁵ = 21220002111167 is a prime.

It is a super-2 number, since 2×21220002111199² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21220002111199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220002111109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365862105337 + ... + 365862105394.

It is an arithmetic number, because the mean of its divisors is an integer number (5487931580490).

Almost surely, 2^{21220002111199} is an apocalyptic number.

21220002111199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21220002111199 is a deficient number, since it is larger than the sum of its proper divisors (731724210761).

21220002111199 is an equidigital number, since it uses as much as digits as its factorization.

21220002111199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731724210760.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 21220002111199 in words is "twenty-one trillion, two hundred twenty billion, two million, one hundred eleven thousand, one hundred ninety-nine".