8001976221 has 12 divisors (see below), whose sum is σ = 11559195648. Its totient is φ = 5334288264.

The previous prime is 8001976219. The next prime is 8001976223. The reversal of 8001976221 is 1226791008.

It is an interprime number because it is at equal distance from previous prime (8001976219) and next prime (8001976223).

It is not a de Polignac number, because 8001976221 - 2¹ = 8001976219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001976223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210546 + ... + 245628.

It is an arithmetic number, because the mean of its divisors is an integer number (963266304).

Almost surely, 2^8001976221 is an apocalyptic number.

It is an amenable number.

8001976221 is a deficient number, since it is larger than the sum of its proper divisors (3557219427).

8001976221 is a wasteful number, since it uses less digits than its factorization.

8001976221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60432 (or 60429 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8001976221 is about 89453.7658290583. The cubic root of 8001976221 is about 2000.1646715246.

The spelling of 8001976221 in words is "eight billion, one million, nine hundred seventy-six thousand, two hundred twenty-one".