21022122211000 has 32 divisors (see below), whose sum is σ = 49191765976080. Its totient is φ = 8408848884000.

The previous prime is 21022122210989. The next prime is 21022122211003. The reversal of 21022122211000 is 11222122012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022122211003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10511060106 + ... + 10511062105.

Almost surely, 2^{21022122211000} is an apocalyptic number.

21022122211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022122211000 is an abundant number, since it is smaller than the sum of its proper divisors (28169643765080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022122211000 is a wasteful number, since it uses less digits than its factorization.

21022122211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022122232 (or 21022122218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022122211000 its reverse (11222122012), we get a palindrome (21033344333012).

The spelling of 21022122211000 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, two hundred eleven thousand".