21034424022231 has 4 divisors (see below), whose sum is σ = 28045898696312. Its totient is φ = 14022949348152.

The previous prime is 21034424022181. The next prime is 21034424022251. The reversal of 21034424022231 is 13222042443012.

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

It is not a de Polignac number, because 21034424022231 - 2⁶ = 21034424022167 is a prime.

It is a super-2 number, since 2×21034424022231² (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 (21034424022251) 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, 3505737337036 + ... + 3505737337041.

It is an arithmetic number, because the mean of its divisors is an integer number (7011474674078).

Almost surely, 2^{21034424022231} is an apocalyptic number.

21034424022231 is a deficient number, since it is larger than the sum of its proper divisors (7011474674081).

21034424022231 is an equidigital number, since it uses as much as digits as its factorization.

21034424022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011474674080.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 21034424022231 its reverse (13222042443012), we get a palindrome (34256466465243).

The spelling of 21034424022231 in words is "twenty-one trillion, thirty-four billion, four hundred twenty-four million, twenty-two thousand, two hundred thirty-one".