11572220371 has 8 divisors (see below), whose sum is σ = 11720347904. Its totient is φ = 11425033800.

The previous prime is 11572220347. The next prime is 11572220383. The reversal of 11572220371 is 17302227511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11572220371 - 2¹¹ = 11572218323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11572220321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210471 + ... + 259696.

It is an arithmetic number, because the mean of its divisors is an integer number (1465043488).

Almost surely, 2^11572220371 is an apocalyptic number.

11572220371 is a deficient number, since it is larger than the sum of its proper divisors (148127533).

11572220371 is a wasteful number, since it uses less digits than its factorization.

11572220371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470481.

The product of its (nonzero) digits is 5880, while the sum is 31.

Adding to 11572220371 its reverse (17302227511), we get a palindrome (28874447882).

The spelling of 11572220371 in words is "eleven billion, five hundred seventy-two million, two hundred twenty thousand, three hundred seventy-one".