21022011110210 has 24 divisors (see below), whose sum is σ = 41592309587388. Its totient is φ = 7644367676000.

The previous prime is 21022011110207. The next prime is 21022011110237. The reversal of 21022011110210 is 1201111022012.

It can be written as a sum of positive squares in 2 ways, for example, as 20346946756081 + 675064354129 = 4510759^2 + 821623^2 .

It is a super-2 number, since 2×21022011110210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8686780241 + ... + 8686782660.

Almost surely, 2^{21022011110210} is an apocalyptic number.

21022011110210 is a deficient number, since it is larger than the sum of its proper divisors (20570298477178).

21022011110210 is a wasteful number, since it uses less digits than its factorization.

21022011110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17373562930 (or 17373562919 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21022011110210 its reverse (1201111022012), we get a palindrome (22223122132222).

The spelling of 21022011110210 in words is "twenty-one trillion, twenty-two billion, eleven million, one hundred ten thousand, two hundred ten".