72001211 has 4 divisors (see below), whose sum is σ = 72113832. Its totient is φ = 71888592.

The previous prime is 72001199. The next prime is 72001213. The reversal of 72001211 is 11210027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11210027 = 383 ⋅29269.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72001211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72001213) 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, 55346 + ... + 56631.

It is an arithmetic number, because the mean of its divisors is an integer number (18028458).

Almost surely, 2^72001211 is an apocalyptic number.

72001211 is a deficient number, since it is larger than the sum of its proper divisors (112621).

72001211 is a wasteful number, since it uses less digits than its factorization.

72001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112620.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 72001211 is about 8485.3527327979. The cubic root of 72001211 is about 416.0190969876.

Adding to 72001211 its reverse (11210027), we get a palindrome (83211238).

The spelling of 72001211 in words is "seventy-two million, one thousand, two hundred eleven".