121010010111101 has 2 divisors, whose sum is σ = 121010010111102. Its totient is φ = 121010010111100.

The previous prime is 121010010111061. The next prime is 121010010111157. The reversal of 121010010111101 is 101111010010121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105518709172900 + 15491300938201 = 10272230^2 + 3935899^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010010111101 - 2⁶ = 121010010111037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121018010111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505005055550 + 60505005055551.

It is an arithmetic number, because the mean of its divisors is an integer number (60505005055551).

Almost surely, 2^{121010010111101} is an apocalyptic number.

It is an amenable number.

121010010111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010010111101 is an equidigital number, since it uses as much as digits as its factorization.

121010010111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 121010010111101 its reverse (101111010010121), we get a palindrome (222121020121222).

The spelling of 121010010111101 in words is "one hundred twenty-one trillion, ten billion, ten million, one hundred eleven thousand, one hundred one".