22061203836 has 96 divisors (see below), whose sum is σ = 60248229888. Its totient is φ = 6151481280.

The previous prime is 22061203811. The next prime is 22061203877. The reversal of 22061203836 is 63830216022.

It is a happy number.

It is a super-2 number, since 2×22061203836² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22061203797 and 22061203806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6973191 + ... + 6976353.

It is an arithmetic number, because the mean of its divisors is an integer number (627585728).

Almost surely, 2^22061203836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22061203836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30124114944).

22061203836 is an abundant number, since it is smaller than the sum of its proper divisors (38187026052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22061203836 is a wasteful number, since it uses less digits than its factorization.

22061203836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151 (or 5149 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 22061203836 its reverse (63830216022), we get a palindrome (85891419858).

The spelling of 22061203836 in words is "twenty-two billion, sixty-one million, two hundred three thousand, eight hundred thirty-six".