21002201311222 has 8 divisors (see below), whose sum is σ = 32589622724400. Its totient is φ = 10138993736424.

The previous prime is 21002201311213. The next prime is 21002201311243. The reversal of 21002201311222 is 22211310220012.

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

It is a super-2 number, since 2×21002201311222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21002201311222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181053459522 + ... + 181053459637.

It is an arithmetic number, because the mean of its divisors is an integer number (4073702840550).

Almost surely, 2^{21002201311222} is an apocalyptic number.

21002201311222 is a deficient number, since it is larger than the sum of its proper divisors (11587421413178).

21002201311222 is a wasteful number, since it uses less digits than its factorization.

21002201311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362106919190.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21002201311222 its reverse (22211310220012), we get a palindrome (43213511531234).

The spelling of 21002201311222 in words is "twenty-one trillion, two billion, two hundred one million, three hundred eleven thousand, two hundred twenty-two".