42221727901 has 4 divisors (see below), whose sum is σ = 44705358972. Its totient is φ = 39738096832.

The previous prime is 42221727869. The next prime is 42221727929. The reversal of 42221727901 is 10972712224.

42221727901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19459971001 + 22761756900 = 139499^2 + 150870^2 .

It is a cyclic number.

It is not a de Polignac number, because 42221727901 - 2⁵ = 42221727869 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 (42221727991) 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, 1241815510 + ... + 1241815543.

It is an arithmetic number, because the mean of its divisors is an integer number (11176339743).

Almost surely, 2^42221727901 is an apocalyptic number.

It is an amenable number.

42221727901 is a deficient number, since it is larger than the sum of its proper divisors (2483631071).

42221727901 is a wasteful number, since it uses less digits than its factorization.

42221727901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483631070.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 42221727901 in words is "forty-two billion, two hundred twenty-one million, seven hundred twenty-seven thousand, nine hundred one".