8921205701 has 2 divisors, whose sum is σ = 8921205702. Its totient is φ = 8921205700.

The previous prime is 8921205697. The next prime is 8921205731. The reversal of 8921205701 is 1075021298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6173873476 + 2747332225 = 78574^2 + 52415^2 .

It is a cyclic number.

It is not a de Polignac number, because 8921205701 - 2² = 8921205697 is a prime.

It is a super-2 number, since 2×8921205701² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8921205731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4460602850 + 4460602851.

It is an arithmetic number, because the mean of its divisors is an integer number (4460602851).

Almost surely, 2^8921205701 is an apocalyptic number.

It is an amenable number.

8921205701 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921205701 is an equidigital number, since it uses as much as digits as its factorization.

8921205701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 8921205701 is about 94452.1344438547. The cubic root of 8921205701 is about 2073.9956973595.

Adding to 8921205701 its reverse (1075021298), we get a palindrome (9996226999).

The spelling of 8921205701 in words is "eight billion, nine hundred twenty-one million, two hundred five thousand, seven hundred one".