21420223003 has 8 divisors (see below), whose sum is σ = 22331924208.
Its totient is φ = 20527319904.
The previous prime is 21420222997. The next prime is 21420223009. The reversal of 21420223003 is 30032202412.
Adding to 21420223003 its reverse (30032202412), we get a palindrome (51452425415).
It is an interprime number because it is at equal distance from previous prime (21420222997) and next prime (21420223009).
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 21420223003 - 221 = 21418125851 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (21420223009) 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, 4697200 + ... + 4701757.
It is an arithmetic number, because the mean of its divisors is an integer number (2791490526).
Almost surely, 221420223003 is an apocalyptic number.
21420223003 is a deficient number, since it is larger than the sum of its proper divisors (911701205).
21420223003 is an equidigital number, since it uses as much as digits as its factorization.
21420223003 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9399053.
The product of its (nonzero) digits is 576, while the sum is 19.
The spelling of 21420223003 in words is "twenty-one billion, four hundred twenty million, two hundred twenty-three thousand, three".