21102002222122 has 8 divisors (see below), whose sum is σ = 31773356958816. Its totient is φ = 10510883235852.

The previous prime is 21102002222057. The next prime is 21102002222123. The reversal of 21102002222122 is 22122220020112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21102002222122.

It is not an unprimeable number, because it can be changed into a prime (21102002222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20058936948 + ... + 20058937999.

It is an arithmetic number, because the mean of its divisors is an integer number (3971669619852).

Almost surely, 2^{21102002222122} is an apocalyptic number.

21102002222122 is a deficient number, since it is larger than the sum of its proper divisors (10671354736694).

21102002222122 is a wasteful number, since it uses less digits than its factorization.

21102002222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40117875212.

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

Adding to 21102002222122 its reverse (22122220020112), we get a palindrome (43224222242234).

The spelling of 21102002222122 in words is "twenty-one trillion, one hundred two billion, two million, two hundred twenty-two thousand, one hundred twenty-two".