21212030032303 has 8 divisors (see below), whose sum is σ = 23141094238080. Its totient is φ = 19283082133080.

The previous prime is 21212030032241. The next prime is 21212030032357. The reversal of 21212030032303 is 30323003021212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21212030032303 is a prime.

It is a super-2 number, since 2×21212030032303² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212030039303) 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, 28695075 + ... + 29425012.

It is an arithmetic number, because the mean of its divisors is an integer number (2892636779760).

Almost surely, 2^{21212030032303} is an apocalyptic number.

21212030032303 is a deficient number, since it is larger than the sum of its proper divisors (1929064205777).

21212030032303 is a wasteful number, since it uses less digits than its factorization.

21212030032303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58153277.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21212030032303 its reverse (30323003021212), we get a palindrome (51535033053515).

The spelling of 21212030032303 in words is "twenty-one trillion, two hundred twelve billion, thirty million, thirty-two thousand, three hundred three".