112571221001 has 4 divisors (see below), whose sum is σ = 112581854532. Its totient is φ = 112560587472.

The previous prime is 112571220997. The next prime is 112571221019. The reversal of 112571221001 is 100122175211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100122175211 = 19 ⋅5269588169.

It can be written as a sum of positive squares in 2 ways, for example, as 62126061001 + 50445160000 = 249251^2 + 224600^2 .

It is a cyclic number.

It is not a de Polignac number, because 112571221001 - 2² = 112571220997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112571221201) 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, 5300870 + ... + 5322063.

It is an arithmetic number, because the mean of its divisors is an integer number (28145463633).

Almost surely, 2^112571221001 is an apocalyptic number.

It is an amenable number.

112571221001 is a deficient number, since it is larger than the sum of its proper divisors (10633531).

112571221001 is a wasteful number, since it uses less digits than its factorization.

112571221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10633530.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 112571221001 its reverse (100122175211), we get a palindrome (212693396212).

The spelling of 112571221001 in words is "one hundred twelve billion, five hundred seventy-one million, two hundred twenty-one thousand, one".