8770121 has 2 divisors, whose sum is σ = 8770122. Its totient is φ = 8770120.

The previous prime is 8770109. The next prime is 8770159. The reversal of 8770121 is 1210778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5569600 + 3200521 = 2360^2 + 1789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8770121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8770171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4385060 + 4385061.

It is an arithmetic number, because the mean of its divisors is an integer number (4385061).

Almost surely, 2^8770121 is an apocalyptic number.

It is an amenable number.

8770121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8770121 is an equidigital number, since it uses as much as digits as its factorization.

8770121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 8770121 is about 2961.4390083201. The cubic root of 8770121 is about 206.2220952759. Note that the first 3 decimals are identical.

Adding to 8770121 its reverse (1210778), we get a palindrome (9980899).

The spelling of 8770121 in words is "eight million, seven hundred seventy thousand, one hundred twenty-one".