971600637011221 has 8 divisors (see below), whose sum is σ = 1125611696890304. Its totient is φ = 821392319351520.

The previous prime is 971600637011197. The next prime is 971600637011233. The reversal of 971600637011221 is 122110736006179.

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

It is not a de Polignac number, because 971600637011221 - 2⁴¹ = 969401613755669 is a prime.

It is a super-2 number, since 2×971600637011221² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971600637011281) 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, 950685554295 + ... + 950685555316.

It is an arithmetic number, because the mean of its divisors is an integer number (140701462111288).

Almost surely, 2^{971600637011221} is an apocalyptic number.

It is an amenable number.

971600637011221 is a deficient number, since it is larger than the sum of its proper divisors (154011059879083).

971600637011221 is a wasteful number, since it uses less digits than its factorization.

971600637011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901371109691.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 971600637011221 in words is "nine hundred seventy-one trillion, six hundred billion, six hundred thirty-seven million, eleven thousand, two hundred twenty-one".