22021665011240 has 32 divisors (see below), whose sum is σ = 50039327930760. Its totient is φ = 8721451488000.

The previous prime is 22021665011231. The next prime is 22021665011257. The reversal of 22021665011240 is 4211056612022.

It can be written as a sum of positive squares in 4 ways, for example, as 21534184564036 + 487480447204 = 4640494^2 + 698198^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22021665011197 and 22021665011206.

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 7 ways as a sum of consecutive naturals, for example, 2725449551 + ... + 2725457630.

Almost surely, 2^{22021665011240} is an apocalyptic number.

22021665011240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021665011240 is an abundant number, since it is smaller than the sum of its proper divisors (28017662919520).

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

22021665011240 is a wasteful number, since it uses less digits than its factorization.

22021665011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450907293 (or 5450907289 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 22021665011240 in words is "twenty-two trillion, twenty-one billion, six hundred sixty-five million, eleven thousand, two hundred forty".