21003321003122 has 32 divisors (see below), whose sum is σ = 32454849208320. Its totient is φ = 10188522101520.

The previous prime is 21003321003097. The next prime is 21003321003173. The reversal of 21003321003122 is 22130012330012.

It is a super-2 number, since 2×21003321003122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003321003094 and 21003321003103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7976879 + ... + 10277997.

It is an arithmetic number, because the mean of its divisors is an integer number (1014214037760).

Almost surely, 2^{21003321003122} is an apocalyptic number.

21003321003122 is a deficient number, since it is larger than the sum of its proper divisors (11451528205198).

21003321003122 is a wasteful number, since it uses less digits than its factorization.

21003321003122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301878.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21003321003122 its reverse (22130012330012), we get a palindrome (43133333333134).

The spelling of 21003321003122 in words is "twenty-one trillion, three billion, three hundred twenty-one million, three thousand, one hundred twenty-two".