21222231307 has 8 divisors (see below), whose sum is σ = 22475460096. Its totient is φ = 19996546152.

The previous prime is 21222231301. The next prime is 21222231319. The reversal of 21222231307 is 70313222212.

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-21222231307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222231301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6884323 + ... + 6887404.

It is an arithmetic number, because the mean of its divisors is an integer number (2809432512).

Almost surely, 2^21222231307 is an apocalyptic number.

21222231307 is a deficient number, since it is larger than the sum of its proper divisors (1253228789).

21222231307 is a wasteful number, since it uses less digits than its factorization.

21222231307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13771817.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 21222231307 its reverse (70313222212), we get a palindrome (91535453519).

The spelling of 21222231307 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-one thousand, three hundred seven".