21100122212003 has 8 divisors (see below), whose sum is σ = 21919502348160. Its totient is φ = 20289412765440.

The previous prime is 21100122211921. The next prime is 21100122212011. The reversal of 21100122212003 is 30021222100112.

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

It is a cyclic number.

It is not a de Polignac number, because 21100122212003 - 2²⁶ = 21100055103139 is a prime.

It is a super-2 number, since 2×21100122212003² (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 (21100122212033) 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 7 ways as a sum of consecutive naturals, for example, 2167667438 + ... + 2167677171.

It is an arithmetic number, because the mean of its divisors is an integer number (2739937793520).

Almost surely, 2^{21100122212003} is an apocalyptic number.

21100122212003 is a deficient number, since it is larger than the sum of its proper divisors (819380136157).

21100122212003 is a wasteful number, since it uses less digits than its factorization.

21100122212003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335344797.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21100122212003 its reverse (30021222100112), we get a palindrome (51121344312115).

The spelling of 21100122212003 in words is "twenty-one trillion, one hundred billion, one hundred twenty-two million, two hundred twelve thousand, three".