121010101113111 has 16 divisors (see below), whose sum is σ = 184396646265600. Its totient is φ = 69148516065408.

The previous prime is 121010101113067. The next prime is 121010101113131. The reversal of 121010101113111 is 111311101010121.

It is a happy number.

It is not a de Polignac number, because 121010101113111 - 2¹¹ = 121010101111063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010101113131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9409935 + ... + 18181503.

It is an arithmetic number, because the mean of its divisors is an integer number (11524790391600).

Almost surely, 2^{121010101113111} is an apocalyptic number.

121010101113111 is a deficient number, since it is larger than the sum of its proper divisors (63386545152489).

121010101113111 is an equidigital number, since it uses as much as digits as its factorization.

121010101113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428518.

The product of its (nonzero) digits is 6, while the sum is 15.

Adding to 121010101113111 its reverse (111311101010121), we get a palindrome (232321202123232).

The spelling of 121010101113111 in words is "one hundred twenty-one trillion, ten billion, one hundred one million, one hundred thirteen thousand, one hundred eleven".