21213331011434 has 8 divisors (see below), whose sum is σ = 31928597188740. Its totient is φ = 10570465281856.

The previous prime is 21213331011413. The next prime is 21213331011443. The reversal of 21213331011434 is 43411013331212.

It can be written as a sum of positive squares in 2 ways, for example, as 20956481730625 + 256849280809 = 4577825^2 + 506803^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21213331011397 and 21213331011406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18100111199 + ... + 18100112370.

Almost surely, 2^{21213331011434} is an apocalyptic number.

21213331011434 is a deficient number, since it is larger than the sum of its proper divisors (10715266177306).

21213331011434 is a wasteful number, since it uses less digits than its factorization.

21213331011434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36200223864.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 21213331011434 its reverse (43411013331212), we get a palindrome (64624344342646).

The spelling of 21213331011434 in words is "twenty-one trillion, two hundred thirteen billion, three hundred thirty-one million, eleven thousand, four hundred thirty-four".