22145354021 has 8 divisors (see below), whose sum is σ = 25405209984. Its totient is φ = 18909556560.

The previous prime is 22145354003. The next prime is 22145354039. The reversal of 22145354021 is 12045354122.

It is an interprime number because it is at equal distance from previous prime (22145354003) and next prime (22145354039).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22145354021 - 2²² = 22141159717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145354921) 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 7 ways as a sum of consecutive naturals, for example, 6012650 + ... + 6016331.

It is an arithmetic number, because the mean of its divisors is an integer number (3175651248).

Almost surely, 2^22145354021 is an apocalyptic number.

It is an amenable number.

22145354021 is a deficient number, since it is larger than the sum of its proper divisors (3259855963).

22145354021 is a wasteful number, since it uses less digits than its factorization.

22145354021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12029251.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 22145354021 in words is "twenty-two billion, one hundred forty-five million, three hundred fifty-four thousand, twenty-one".