971112001 has 4 divisors (see below), whose sum is σ = 971931312. Its totient is φ = 970292692.

The previous prime is 971111993. The next prime is 971112007. The reversal of 971112001 is 100211179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 971112001 - 2³ = 971111993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971112007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407875 + ... + 410248.

It is an arithmetic number, because the mean of its divisors is an integer number (242982828).

Almost surely, 2^971112001 is an apocalyptic number.

It is an amenable number.

971112001 is a deficient number, since it is larger than the sum of its proper divisors (819311).

971112001 is a wasteful number, since it uses less digits than its factorization.

971112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819310.

The product of its (nonzero) digits is 126, while the sum is 22.

The square root of 971112001 is about 31162.6699915139. The cubic root of 971112001 is about 990.2764255477.

It can be divided in two parts, 9711 and 12001, that added together give a palindrome (21712).

The spelling of 971112001 in words is "nine hundred seventy-one million, one hundred twelve thousand, one".