21125451114 has 24 divisors (see below), whose sum is σ = 45775416960. Its totient is φ = 7041262248.

The previous prime is 21125451103. The next prime is 21125451119. The reversal of 21125451114 is 41115452112.

21125451114 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 545 + 1 + 114 = 666.

It is not an unprimeable number, because it can be changed into a prime (21125451119) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 234727 + ... + 312005.

It is an arithmetic number, because the mean of its divisors is an integer number (1907309040).

Almost surely, 2^21125451114 is an apocalyptic number.

21125451114 is an abundant number, since it is smaller than the sum of its proper divisors (24649965846).

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

21125451114 is a wasteful number, since it uses less digits than its factorization.

21125451114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92474 (or 92471 counting only the distinct ones).

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

The spelling of 21125451114 in words is "twenty-one billion, one hundred twenty-five million, four hundred fifty-one thousand, one hundred fourteen".