72222102352 has 10 divisors (see below), whose sum is σ = 139930323338. Its totient is φ = 36111051168.

The previous prime is 72222102299. The next prime is 72222102353. The reversal of 72222102352 is 25320122227.

It can be written as a sum of positive squares in only one way, i.e., 72197540416 + 24561936 = 268696^2 + 4956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72222102352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222102353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2256940683 + ... + 2256940714.

Almost surely, 2^72222102352 is an apocalyptic number.

It is an amenable number.

72222102352 is a deficient number, since it is larger than the sum of its proper divisors (67708220986).

72222102352 is a wasteful number, since it uses less digits than its factorization.

72222102352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513881405 (or 4513881399 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 72222102352 its reverse (25320122227), we get a palindrome (97542224579).

The spelling of 72222102352 in words is "seventy-two billion, two hundred twenty-two million, one hundred two thousand, three hundred fifty-two".