22131403652 has 6 divisors (see below), whose sum is σ = 38729956398. Its totient is φ = 11065701824.

The previous prime is 22131403639. The next prime is 22131403669. The reversal of 22131403652 is 25630413122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19459134016 + 2672269636 = 139496^2 + 51694^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2766425453 + ... + 2766425460.

It is an arithmetic number, because the mean of its divisors is an integer number (6454992733).

Almost surely, 2^22131403652 is an apocalyptic number.

It is an amenable number.

22131403652 is a deficient number, since it is larger than the sum of its proper divisors (16598552746).

22131403652 is a wasteful number, since it uses less digits than its factorization.

22131403652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532850917 (or 5532850915 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 22131403652 its reverse (25630413122), we get a palindrome (47761816774).

The spelling of 22131403652 in words is "twenty-two billion, one hundred thirty-one million, four hundred three thousand, six hundred fifty-two".