21220114340 has 24 divisors (see below), whose sum is σ = 47183549112. Its totient is φ = 7988748800.

The previous prime is 21220114313. The next prime is 21220114361. The reversal of 21220114340 is 4341102212.

It can be written as a sum of positive squares in 4 ways, for example, as 5929308004 + 15290806336 = 77002^2 + 123656^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31205711 + ... + 31206390.

It is an arithmetic number, because the mean of its divisors is an integer number (1965981213).

Almost surely, 2^21220114340 is an apocalyptic number.

21220114340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220114340 is an abundant number, since it is smaller than the sum of its proper divisors (25963434772).

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

21220114340 is a wasteful number, since it uses less digits than its factorization.

21220114340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62412127 (or 62412125 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21220114340 its reverse (4341102212), we get a palindrome (25561216552).

The spelling of 21220114340 in words is "twenty-one billion, two hundred twenty million, one hundred fourteen thousand, three hundred forty".