42221011 has 8 divisors (see below), whose sum is σ = 48328704. Its totient is φ = 36132360.

The previous prime is 42220963. The next prime is 42221027. The reversal of 42221011 is 11012224.

It is a happy number.

42221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42221011 is a prime.

It is a super-2 number, since 2×42221011² = 3565227539724242, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 42220982 and 42221000.

It is not an unprimeable number, because it can be changed into a prime (42221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366 + ... + 9196.

It is an arithmetic number, because the mean of its divisors is an integer number (6041088).

Almost surely, 2^42221011 is an apocalyptic number.

42221011 is a deficient number, since it is larger than the sum of its proper divisors (6107693).

42221011 is an equidigital number, since it uses as much as digits as its factorization.

42221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 42221011 is about 6497.7696942874. The cubic root of 42221011 is about 348.2113125161.

Adding to 42221011 its reverse (11012224), we get a palindrome (53233235).

The spelling of 42221011 in words is "forty-two million, two hundred twenty-one thousand, eleven".