21222154614 has 96 divisors (see below), whose sum is σ = 46007769600. Its totient is φ = 6506196480.

The previous prime is 21222154601. The next prime is 21222154619. The reversal of 21222154614 is 41645122212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222154619) 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 47 ways as a sum of consecutive naturals, for example, 88795507 + ... + 88795745.

It is an arithmetic number, because the mean of its divisors is an integer number (479247600).

Almost surely, 2^21222154614 is an apocalyptic number.

21222154614 is an abundant number, since it is smaller than the sum of its proper divisors (24785614986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21222154614 is a wasteful number, since it uses less digits than its factorization.

21222154614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 437 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

Adding to 21222154614 its reverse (41645122212), we get a palindrome (62867276826).

The spelling of 21222154614 in words is "twenty-one billion, two hundred twenty-two million, one hundred fifty-four thousand, six hundred fourteen".