22161034361642 has 128 divisors (see below), whose sum is σ = 38139941339136. Its totient is φ = 9566294400000.

The previous prime is 22161034361579. The next prime is 22161034361677. The reversal of 22161034361642 is 24616343016122.

It is a super-2 number, since 2×22161034361642² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22161034361642.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4422474917 + ... + 4422479927.

It is an arithmetic number, because the mean of its divisors is an integer number (297968291712).

Almost surely, 2^{22161034361642} is an apocalyptic number.

22161034361642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22161034361642 is a deficient number, since it is larger than the sum of its proper divisors (15978906977494).

22161034361642 is a wasteful number, since it uses less digits than its factorization.

22161034361642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5716.

The product of its (nonzero) digits is 248832, while the sum is 41.

Adding to 22161034361642 its reverse (24616343016122), we get a palindrome (46777377377764).

The spelling of 22161034361642 in words is "twenty-two trillion, one hundred sixty-one billion, thirty-four million, three hundred sixty-one thousand, six hundred forty-two".