21234503140 has 48 divisors (see below), whose sum is σ = 47382596352. Its totient is φ = 7965881856.

The previous prime is 21234503083. The next prime is 21234503153. The reversal of 21234503140 is 4130543212.

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 15 ways as a sum of consecutive naturals, for example, 14124 + ... + 206563.

It is an arithmetic number, because the mean of its divisors is an integer number (987137424).

Almost surely, 2^21234503140 is an apocalyptic number.

21234503140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21234503140 is an abundant number, since it is smaller than the sum of its proper divisors (26148093212).

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

21234503140 is a wasteful number, since it uses less digits than its factorization.

21234503140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220996 (or 220994 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 21234503140 in words is "twenty-one billion, two hundred thirty-four million, five hundred three thousand, one hundred forty".