8511921101 has 2 divisors, whose sum is σ = 8511921102. Its totient is φ = 8511921100.

The previous prime is 8511921049. The next prime is 8511921137. The reversal of 8511921101 is 1011291158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8280090025 + 231831076 = 90995^2 + 15226^2 .

It is a cyclic number.

It is not a de Polignac number, because 8511921101 - 2²² = 8507726797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8511941101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4255960550 + 4255960551.

It is an arithmetic number, because the mean of its divisors is an integer number (4255960551).

Almost surely, 2^8511921101 is an apocalyptic number.

It is an amenable number.

8511921101 is a deficient number, since it is larger than the sum of its proper divisors (1).

8511921101 is an equidigital number, since it uses as much as digits as its factorization.

8511921101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 29.

The square root of 8511921101 is about 92260.0731681912. The cubic root of 8511921101 is about 2041.7811802366.

The spelling of 8511921101 in words is "eight billion, five hundred eleven million, nine hundred twenty-one thousand, one hundred one".