21000011221022 has 8 divisors (see below), whose sum is σ = 31658308374000. Its totient is φ = 10447241763024.

The previous prime is 21000011221009. The next prime is 21000011221027. The reversal of 21000011221022 is 22012211000012.

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

It is a super-2 number, since 2×21000011221022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000011220988 and 21000011221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000011221027) 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, 26381923247 + ... + 26381924042.

It is an arithmetic number, because the mean of its divisors is an integer number (3957288546750).

Almost surely, 2^{21000011221022} is an apocalyptic number.

21000011221022 is a deficient number, since it is larger than the sum of its proper divisors (10658297152978).

21000011221022 is a wasteful number, since it uses less digits than its factorization.

21000011221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52763847490.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21000011221022 its reverse (22012211000012), we get a palindrome (43012222221034).

The spelling of 21000011221022 in words is "twenty-one trillion, eleven million, two hundred twenty-one thousand, twenty-two".