42000222022021 has 16 divisors (see below), whose sum is σ = 47337363705600. Its totient is φ = 37028337781248.

The previous prime is 42000222021977. The next prime is 42000222022027. The reversal of 42000222022021 is 12022022200024.

It is not a de Polignac number, because 42000222022021 - 2²¹ = 42000219924869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42000222022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42000222022027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730486125 + ... + 730543618.

It is an arithmetic number, because the mean of its divisors is an integer number (2958585231600).

Almost surely, 2^{42000222022021} is an apocalyptic number.

It is an amenable number.

42000222022021 is a deficient number, since it is larger than the sum of its proper divisors (5337141683579).

42000222022021 is a wasteful number, since it uses less digits than its factorization.

42000222022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461029868.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 42000222022021 its reverse (12022022200024), we get a palindrome (54022244222045).

The spelling of 42000222022021 in words is "forty-two trillion, two hundred twenty-two million, twenty-two thousand, twenty-one".