21030301031203 has 4 divisors (see below), whose sum is σ = 21030421452768. Its totient is φ = 21030180609640.

The previous prime is 21030301031149. The next prime is 21030301031221. The reversal of 21030301031203 is 30213010303012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21030301031203 - 2¹⁷ = 21030300900131 is a prime.

It is a super-2 number, since 2×21030301031203² (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 (21030301031263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59948443 + ... + 60298228.

It is an arithmetic number, because the mean of its divisors is an integer number (5257605363192).

Almost surely, 2^{21030301031203} is an apocalyptic number.

21030301031203 is a deficient number, since it is larger than the sum of its proper divisors (120421565).

21030301031203 is a wasteful number, since it uses less digits than its factorization.

21030301031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120421564.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21030301031203 its reverse (30213010303012), we get a palindrome (51243311334215).

The spelling of 21030301031203 in words is "twenty-one trillion, thirty billion, three hundred one million, thirty-one thousand, two hundred three".