21200210222122 has 8 divisors (see below), whose sum is σ = 31800412387296. Its totient is φ = 10600072759692.

The previous prime is 21200210222111. The next prime is 21200210222123. The reversal of 21200210222122 is 22122201200212.

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

It is a super-2 number, since 2×21200210222122² (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 21200210222122.

It is not an unprimeable number, because it can be changed into a prime (21200210222123) 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, 15348078 + ... + 16672249.

It is an arithmetic number, because the mean of its divisors is an integer number (3975051548412).

Almost surely, 2^{21200210222122} is an apocalyptic number.

21200210222122 is a deficient number, since it is larger than the sum of its proper divisors (10600202165174).

21200210222122 is a wasteful number, since it uses less digits than its factorization.

21200210222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32351372.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21200210222122 its reverse (22122201200212), we get a palindrome (43322411422334).

The spelling of 21200210222122 in words is "twenty-one trillion, two hundred billion, two hundred ten million, two hundred twenty-two thousand, one hundred twenty-two".