21022120102003 has 4 divisors (see below), whose sum is σ = 21029717546080. Its totient is φ = 21014522657928.

The previous prime is 21022120101971. The next prime is 21022120102013. The reversal of 21022120102003 is 30020102122012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21022120102003 - 2⁵ = 21022120101971 is a prime.

It is a super-2 number, since 2×21022120102003² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022120102013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3798717888 + ... + 3798723421.

It is an arithmetic number, because the mean of its divisors is an integer number (5257429386520).

Almost surely, 2^{21022120102003} is an apocalyptic number.

21022120102003 is a deficient number, since it is larger than the sum of its proper divisors (7597444077).

21022120102003 is an equidigital number, since it uses as much as digits as its factorization.

21022120102003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597444076.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21022120102003 its reverse (30020102122012), we get a palindrome (51042222224015).

The spelling of 21022120102003 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, one hundred two thousand, three".