72111201211 has 16 divisors (see below), whose sum is σ = 85176383488. Its totient is φ = 59741841600.

The previous prime is 72111201139. The next prime is 72111201229. The reversal of 72111201211 is 11210211127.

It is not a de Polignac number, because 72111201211 - 2¹⁵ = 72111168443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72111201271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28890 + ... + 380863.

It is an arithmetic number, because the mean of its divisors is an integer number (5323523968).

Almost surely, 2^72111201211 is an apocalyptic number.

72111201211 is a deficient number, since it is larger than the sum of its proper divisors (13065182277).

72111201211 is a wasteful number, since it uses less digits than its factorization.

72111201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410602.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 72111201211 its reverse (11210211127), we get a palindrome (83321412338).

The spelling of 72111201211 in words is "seventy-two billion, one hundred eleven million, two hundred one thousand, two hundred eleven".