21421155114 has 96 divisors (see below), whose sum is σ = 48537403200. Its totient is φ = 6821627904.

The previous prime is 21421155083. The next prime is 21421155137. The reversal of 21421155114 is 41155112412.

21421155114 is a `hidden beast` number, since 2 + 142 + 1 + 1 + 5 + 511 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18418297 + ... + 18419459.

It is an arithmetic number, because the mean of its divisors is an integer number (505597950).

Almost surely, 2^21421155114 is an apocalyptic number.

21421155114 is an abundant number, since it is smaller than the sum of its proper divisors (27116248086).

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

21421155114 is a wasteful number, since it uses less digits than its factorization.

21421155114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1713 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 21421155114 its reverse (41155112412), we get a palindrome (62576267526).

The spelling of 21421155114 in words is "twenty-one billion, four hundred twenty-one million, one hundred fifty-five thousand, one hundred fourteen".