10121211011 has 2 divisors, whose sum is σ = 10121211012. Its totient is φ = 10121211010.

The previous prime is 10121210989. The next prime is 10121211013. The reversal of 10121211011 is 11011212101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10121211011 - 2¹⁸ = 10120948867 is a prime.

Together with 10121211013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121210983 and 10121211001.

It is not a weakly prime, because it can be changed into another prime (10121211013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060605505 + 5060605506.

It is an arithmetic number, because the mean of its divisors is an integer number (5060605506).

Almost surely, 2^10121211011 is an apocalyptic number.

10121211011 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121211011 is an equidigital number, since it uses as much as digits as its factorization.

10121211011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121211011 its reverse (11011212101), we get a palindrome (21132423112).

The spelling of 10121211011 in words is "ten billion, one hundred twenty-one million, two hundred eleven thousand, eleven".