22145066501 has 4 divisors (see below), whose sum is σ = 22146071904. Its totient is φ = 22144061100.

The previous prime is 22145066491. The next prime is 22145066533. The reversal of 22145066501 is 10566054122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22145066501 - 2¹⁰ = 22145065477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145066551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468905 + ... + 513966.

It is an arithmetic number, because the mean of its divisors is an integer number (5536517976).

Almost surely, 2^22145066501 is an apocalyptic number.

It is an amenable number.

22145066501 is a deficient number, since it is larger than the sum of its proper divisors (1005403).

22145066501 is an equidigital number, since it uses as much as digits as its factorization.

22145066501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005402.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 22145066501 in words is "twenty-two billion, one hundred forty-five million, sixty-six thousand, five hundred one".