10102211081 has 2 divisors, whose sum is σ = 10102211082. Its totient is φ = 10102211080.

The previous prime is 10102211051. The next prime is 10102211107. The reversal of 10102211081 is 18011220101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9615567481 + 486643600 = 98059^2 + 22060^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102211081 - 2²² = 10098016777 is a prime.

It is a super-3 number, since 3×10102211081³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10102211051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051105540 + 5051105541.

It is an arithmetic number, because the mean of its divisors is an integer number (5051105541).

Almost surely, 2^10102211081 is an apocalyptic number.

It is an amenable number.

10102211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102211081 is an equidigital number, since it uses as much as digits as its factorization.

10102211081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10102211081 its reverse (18011220101), we get a palindrome (28113431182).

The spelling of 10102211081 in words is "ten billion, one hundred two million, two hundred eleven thousand, eighty-one".