21420322114 has 16 divisors (see below), whose sum is σ = 32228681400. Its totient is φ = 10677469824.

The previous prime is 21420322057. The next prime is 21420322117. The reversal of 21420322114 is 41122302412.

It can be written as a sum of positive squares in 4 ways, for example, as 16426779889 + 4993542225 = 128167^2 + 70665^2 .

It is not an unprimeable number, because it can be changed into a prime (21420322117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113772 + ... + 1132840.

Almost surely, 2^21420322114 is an apocalyptic number.

21420322114 is a deficient number, since it is larger than the sum of its proper divisors (10808359286).

21420322114 is a wasteful number, since it uses less digits than its factorization.

21420322114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20757.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21420322114 its reverse (41122302412), we get a palindrome (62542624526).

The spelling of 21420322114 in words is "twenty-one billion, four hundred twenty million, three hundred twenty-two thousand, one hundred fourteen".