21022110001000 has 32 divisors (see below), whose sum is σ = 49191737404680. Its totient is φ = 8408844000000.

The previous prime is 21022110000967. The next prime is 21022110001051. The reversal of 21022110001000 is 10001122012.

It can be written as a sum of positive squares in 4 ways, for example, as 13807481768964 + 7214628232036 = 3715842^2 + 2686006^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10511054001 + ... + 10511056000.

Almost surely, 2^{21022110001000} is an apocalyptic number.

21022110001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022110001000 is an abundant number, since it is smaller than the sum of its proper divisors (28169627403680).

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

21022110001000 is a wasteful number, since it uses less digits than its factorization.

21022110001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21022110022 (or 21022110008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21022110001000 its reverse (10001122012), we get a palindrome (21032111123012).

The spelling of 21022110001000 in words is "twenty-one trillion, twenty-two billion, one hundred ten million, one thousand".