22021552727 has 4 divisors (see below), whose sum is σ = 22025767776. Its totient is φ = 22017337680.

The previous prime is 22021552711. The next prime is 22021552823. The reversal of 22021552727 is 72725512022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22021552727 - 2⁴ = 22021552711 is a prime.

It is a super-2 number, since 2×22021552727² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021552627) 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, 2099678 + ... + 2110139.

It is an arithmetic number, because the mean of its divisors is an integer number (5506441944).

Almost surely, 2^22021552727 is an apocalyptic number.

22021552727 is a deficient number, since it is larger than the sum of its proper divisors (4215049).

22021552727 is an equidigital number, since it uses as much as digits as its factorization.

22021552727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215048.

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 22021552727 in words is "twenty-two billion, twenty-one million, five hundred fifty-two thousand, seven hundred twenty-seven".