42220343455531 has 12 divisors (see below), whose sum is σ = 43399278197352. Its totient is φ = 41072622349248.

The previous prime is 42220343455471. The next prime is 42220343455541. The reversal of 42220343455531 is 13555434302224.

42220343455531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42220343455531 - 2⁹ = 42220343455019 is a prime.

It is a super-2 number, since 2×42220343455531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42220343455541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6005991 + ... + 10977823.

It is an arithmetic number, because the mean of its divisors is an integer number (3616606516446).

Almost surely, 2^{42220343455531} is an apocalyptic number.

42220343455531 is a deficient number, since it is larger than the sum of its proper divisors (1178934741821).

42220343455531 is an equidigital number, since it uses as much as digits as its factorization.

42220343455531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978110 (or 4978073 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 43.

Adding to 42220343455531 its reverse (13555434302224), we get a palindrome (55775777757755).

The spelling of 42220343455531 in words is "forty-two trillion, two hundred twenty billion, three hundred forty-three million, four hundred fifty-five thousand, five hundred thirty-one".