21116314442 has 32 divisors (see below), whose sum is σ = 32703035904. Its totient is φ = 10220832000.

The previous prime is 21116314393. The next prime is 21116314459. The reversal of 21116314442 is 24441361112.

It is a super-2 number, since 2×21116314442² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3417668 + ... + 3423840.

It is an arithmetic number, because the mean of its divisors is an integer number (1021969872).

Almost surely, 2^21116314442 is an apocalyptic number.

21116314442 is a deficient number, since it is larger than the sum of its proper divisors (11586721462).

21116314442 is a wasteful number, since it uses less digits than its factorization.

21116314442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614.

The product of its digits is 4608, while the sum is 29.

Adding to 21116314442 its reverse (24441361112), we get a palindrome (45557675554).

The spelling of 21116314442 in words is "twenty-one billion, one hundred sixteen million, three hundred fourteen thousand, four hundred forty-two".