20160876221 has 2 divisors, whose sum is σ = 20160876222. Its totient is φ = 20160876220.

The previous prime is 20160876217. The next prime is 20160876227. The reversal of 20160876221 is 12267806102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20160876121 + 100 = 141989^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 20160876221 - 2² = 20160876217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20160876227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080438110 + 10080438111.

It is an arithmetic number, because the mean of its divisors is an integer number (10080438111).

Almost surely, 2^20160876221 is an apocalyptic number.

It is an amenable number.

20160876221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20160876221 is an equidigital number, since it uses as much as digits as its factorization.

20160876221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 20160876221 in words is "twenty billion, one hundred sixty million, eight hundred seventy-six thousand, two hundred twenty-one".