21022102110122 has 8 divisors (see below), whose sum is σ = 31533363901956. Its totient is φ = 10510980809472.

The previous prime is 21022102110091. The next prime is 21022102110187. The reversal of 21022102110122 is 22101120122012.

It can be written as a sum of positive squares in 2 ways, for example, as 16988748871081 + 4033353239041 = 4121741^2 + 2008321^2 .

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 21022102110122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34747913 + ... + 35347724.

Almost surely, 2^{21022102110122} is an apocalyptic number.

21022102110122 is a deficient number, since it is larger than the sum of its proper divisors (10511261791834).

21022102110122 is a wasteful number, since it uses less digits than its factorization.

21022102110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70245592.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21022102110122 its reverse (22101120122012), we get a palindrome (43123222232134).

The spelling of 21022102110122 in words is "twenty-one trillion, twenty-two billion, one hundred two million, one hundred ten thousand, one hundred twenty-two".