101101010111021 has 2 divisors, whose sum is σ = 101101010111022. Its totient is φ = 101101010111020.

The previous prime is 101101010110939. The next prime is 101101010111069. The reversal of 101101010111021 is 120111010101101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74116361755396 + 26984648355625 = 8609086^2 + 5194675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101101010111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101101010110993 and 101101010111011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101101010711021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50550505055510 + 50550505055511.

It is an arithmetic number, because the mean of its divisors is an integer number (50550505055511).

Almost surely, 2^{101101010111021} is an apocalyptic number.

It is an amenable number.

101101010111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101101010111021 is an equidigital number, since it uses as much as digits as its factorization.

101101010111021 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 11.

Adding to 101101010111021 its reverse (120111010101101), we get a palindrome (221212020212122).

The spelling of 101101010111021 in words is "one hundred one trillion, one hundred one billion, ten million, one hundred eleven thousand, twenty-one".