21201022202003 has 8 divisors (see below), whose sum is σ = 25655018463072. Its totient is φ = 17103345641856.

The previous prime is 21201022201999. The next prime is 21201022202033. The reversal of 21201022202003 is 30020222010212.

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 21201022202003 - 2² = 21201022201999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201022202033) 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, 89079925100 + ... + 89079925337.

It is an arithmetic number, because the mean of its divisors is an integer number (3206877307884).

Almost surely, 2^{21201022202003} is an apocalyptic number.

21201022202003 is a deficient number, since it is larger than the sum of its proper divisors (4453996261069).

21201022202003 is a wasteful number, since it uses less digits than its factorization.

21201022202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178159850461.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21201022202003 its reverse (30020222010212), we get a palindrome (51221244212215).

The spelling of 21201022202003 in words is "twenty-one trillion, two hundred one billion, twenty-two million, two hundred two thousand, three".