21226231214 has 16 divisors (see below), whose sum is σ = 33368764320. Its totient is φ = 10107340320.

The previous prime is 21226231211. The next prime is 21226231223. The reversal of 21226231214 is 41213262212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21226231211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996977 + ... + 1018044.

It is an arithmetic number, because the mean of its divisors is an integer number (2085547770).

Almost surely, 2^21226231214 is an apocalyptic number.

21226231214 is a deficient number, since it is larger than the sum of its proper divisors (12142533106).

21226231214 is a wasteful number, since it uses less digits than its factorization.

21226231214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015275.

The product of its digits is 2304, while the sum is 26.

Adding to 21226231214 its reverse (41213262212), we get a palindrome (62439493426).

The spelling of 21226231214 in words is "twenty-one billion, two hundred twenty-six million, two hundred thirty-one thousand, two hundred fourteen".