21121102001003 has 8 divisors (see below), whose sum is σ = 21124629781200. Its totient is φ = 21117574521088.

The previous prime is 21121102000997. The next prime is 21121102001029. The reversal of 21121102001003 is 30010020112112.

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 21121102001003 - 2²⁴ = 21121085223787 is a prime.

It is a super-2 number, since 2×21121102001003² (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 (21121102000003) by changing a digit.

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, 171907928 + ... + 172030746.

It is an arithmetic number, because the mean of its divisors is an integer number (2640578722650).

Almost surely, 2^{21121102001003} is an apocalyptic number.

21121102001003 is a deficient number, since it is larger than the sum of its proper divisors (3527780197).

21121102001003 is a wasteful number, since it uses less digits than its factorization.

21121102001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150141.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21121102001003 its reverse (30010020112112), we get a palindrome (51131122113115).

The spelling of 21121102001003 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred two million, one thousand, three".