21320222214 has 32 divisors (see below), whose sum is σ = 43801855200. Its totient is φ = 6913251072.

The previous prime is 21320222197. The next prime is 21320222219. The reversal of 21320222214 is 41222202312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320222219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2003572 + ... + 2014184.

It is an arithmetic number, because the mean of its divisors is an integer number (1368807975).

Almost surely, 2^21320222214 is an apocalyptic number.

21320222214 is an abundant number, since it is smaller than the sum of its proper divisors (22481632986).

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

21320222214 is a wasteful number, since it uses less digits than its factorization.

21320222214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19704.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21320222214 its reverse (41222202312), we get a palindrome (62542424526).

The spelling of 21320222214 in words is "twenty-one billion, three hundred twenty million, two hundred twenty-two thousand, two hundred fourteen".