72211023450211 has 4 divisors (see below), whose sum is σ = 72211170687912. Its totient is φ = 72210876212512.

The previous prime is 72211023450197. The next prime is 72211023450239. The reversal of 72211023450211 is 11205432011227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72211023450211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72211023450271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72880726 + ... + 73864891.

It is an arithmetic number, because the mean of its divisors is an integer number (18052792671978).

Almost surely, 2^{72211023450211} is an apocalyptic number.

72211023450211 is a deficient number, since it is larger than the sum of its proper divisors (147237701).

72211023450211 is a wasteful number, since it uses less digits than its factorization.

72211023450211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147237700.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 72211023450211 its reverse (11205432011227), we get a palindrome (83416455461438).

The spelling of 72211023450211 in words is "seventy-two trillion, two hundred eleven billion, twenty-three million, four hundred fifty thousand, two hundred eleven".