101121011 has 2 divisors, whose sum is σ = 101121012. Its totient is φ = 101121010.

The previous prime is 101120989. The next prime is 101121067. The reversal of 101121011 is 110121101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101121011 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101121011.

It is not a weakly prime, because it can be changed into another prime (101121071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560505 + 50560506.

It is an arithmetic number, because the mean of its divisors is an integer number (50560506).

Almost surely, 2^101121011 is an apocalyptic number.

101121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

101121011 is an equidigital number, since it uses as much as digits as its factorization.

101121011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 101121011 is about 10055.8943411315. The cubic root of 101121011 is about 465.8868664434.

Adding to 101121011 its reverse (110121101), we get a palindrome (211242112).

It can be divided in two parts, 1011 and 21011, that added together give a palindrome (22022).

The spelling of 101121011 in words is "one hundred one million, one hundred twenty-one thousand, eleven".