21212332033303 has 8 divisors (see below), whose sum is σ = 21297061785168. Its totient is φ = 21127768257024.

The previous prime is 21212332033261. The next prime is 21212332033309. The reversal of 21212332033303 is 30333023321212.

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 21212332033303 - 2¹³ = 21212332025111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212332033309) 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, 41237776 + ... + 41748997.

It is an arithmetic number, because the mean of its divisors is an integer number (2662132723146).

Almost surely, 2^{21212332033303} is an apocalyptic number.

21212332033303 is a deficient number, since it is larger than the sum of its proper divisors (84729751865).

21212332033303 is an equidigital number, since it uses as much as digits as its factorization.

21212332033303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82987793.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21212332033303 its reverse (30333023321212), we get a palindrome (51545355354515).

The spelling of 21212332033303 in words is "twenty-one trillion, two hundred twelve billion, three hundred thirty-two million, thirty-three thousand, three hundred three".