22140021040 has 20 divisors (see below), whose sum is σ = 51475549104. Its totient is φ = 8856008384.

The previous prime is 22140021023. The next prime is 22140021067. The reversal of 22140021040 is 4012004122.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138375052 + ... + 138375211.

Almost surely, 2^22140021040 is an apocalyptic number.

22140021040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22140021040 is an abundant number, since it is smaller than the sum of its proper divisors (29335528064).

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

22140021040 is a wasteful number, since it uses less digits than its factorization.

22140021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276750276 (or 276750270 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22140021040 its reverse (4012004122), we get a palindrome (26152025162).

The spelling of 22140021040 in words is "twenty-two billion, one hundred forty million, twenty-one thousand, forty".