101591201 has 4 divisors (see below), whose sum is σ = 107567172. Its totient is φ = 95615232.

The previous prime is 101591197. The next prime is 101591221. The reversal of 101591201 is 102195101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102195101 = 29 ⋅3523969.

It can be written as a sum of positive squares in 2 ways, for example, as 42915601 + 58675600 = 6551^2 + 7660^2 .

It is a cyclic number.

It is not a de Polignac number, because 101591201 - 2² = 101591197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101591221) 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, 2987960 + ... + 2987993.

It is an arithmetic number, because the mean of its divisors is an integer number (26891793).

Almost surely, 2^101591201 is an apocalyptic number.

It is an amenable number.

101591201 is a deficient number, since it is larger than the sum of its proper divisors (5975971).

101591201 is an equidigital number, since it uses as much as digits as its factorization.

101591201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975970.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 101591201 is about 10079.2460531530. The cubic root of 101591201 is about 466.6078399204.

The spelling of 101591201 in words is "one hundred one million, five hundred ninety-one thousand, two hundred one".