21300121403 has 8 divisors (see below), whose sum is σ = 23251193856. Its totient is φ = 19351498600.

The previous prime is 21300121387. The next prime is 21300121417. The reversal of 21300121403 is 30412100312.

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 21300121403 - 2⁴ = 21300121387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300121303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594203 + ... + 629028.

It is an arithmetic number, because the mean of its divisors is an integer number (2906399232).

Almost surely, 2^21300121403 is an apocalyptic number.

21300121403 is a deficient number, since it is larger than the sum of its proper divisors (1951072453).

21300121403 is a wasteful number, since it uses less digits than its factorization.

21300121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224825.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21300121403 its reverse (30412100312), we get a palindrome (51712221715).

The spelling of 21300121403 in words is "twenty-one billion, three hundred million, one hundred twenty-one thousand, four hundred three".