22021423402042 has 16 divisors (see below), whose sum is σ = 34770888804960. Its totient is φ = 10431134476272.

The previous prime is 22021423402007. The next prime is 22021423402049. The reversal of 22021423402042 is 24020432412022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021423402042.

It is not an unprimeable number, because it can be changed into a prime (22021423402049) 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 7 ways as a sum of consecutive naturals, for example, 4528153 + ... + 8034115.

It is an arithmetic number, because the mean of its divisors is an integer number (2173180550310).

Almost surely, 2^{22021423402042} is an apocalyptic number.

22021423402042 is a deficient number, since it is larger than the sum of its proper divisors (12749465402918).

22021423402042 is a wasteful number, since it uses less digits than its factorization.

22021423402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671277.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22021423402042 its reverse (24020432412022), we get a palindrome (46041855814064).

The spelling of 22021423402042 in words is "twenty-two trillion, twenty-one billion, four hundred twenty-three million, four hundred two thousand, forty-two".