96539821221 has 32 divisors (see below), whose sum is σ = 136759615488. Its totient is φ = 60366309120.

The previous prime is 96539821219. The next prime is 96539821223. The reversal of 96539821221 is 12212893569.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (96539821219) and next prime (96539821223).

It is not a de Polignac number, because 96539821221 - 2¹ = 96539821219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96539821223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24556626 + ... + 24560556.

It is an arithmetic number, because the mean of its divisors is an integer number (4273737984).

Almost surely, 2^96539821221 is an apocalyptic number.

It is an amenable number.

96539821221 is a deficient number, since it is larger than the sum of its proper divisors (40219794267).

96539821221 is a wasteful number, since it uses less digits than its factorization.

96539821221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481.

The product of its digits is 466560, while the sum is 48.

The spelling of 96539821221 in words is "ninety-six billion, five hundred thirty-nine million, eight hundred twenty-one thousand, two hundred twenty-one".