21223760140 has 48 divisors (see below), whose sum is σ = 50735704320. Its totient is φ = 7382175680.

The previous prime is 21223760119. The next prime is 21223760183. The reversal of 21223760140 is 4106732212.

It is a junction number, because it is equal to n+sod(n) for n = 21223760099 and 21223760108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092150 + ... + 2102269.

It is an arithmetic number, because the mean of its divisors is an integer number (1056993840).

Almost surely, 2^21223760140 is an apocalyptic number.

21223760140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223760140 is an abundant number, since it is smaller than the sum of its proper divisors (29511944180).

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

21223760140 is a wasteful number, since it uses less digits than its factorization.

21223760140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194462 (or 4194460 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 21223760140 in words is "twenty-one billion, two hundred twenty-three million, seven hundred sixty thousand, one hundred forty".