121011102112011 has 4 divisors (see below), whose sum is σ = 161348136149352. Its totient is φ = 80674068074672.

The previous prime is 121011102112009. The next prime is 121011102112013. The reversal of 121011102112011 is 110211201110121.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (121011102112009) and next prime (121011102112013).

It is a cyclic number.

It is not a de Polignac number, because 121011102112011 - 2¹ = 121011102112009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121011102112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20168517018666 + ... + 20168517018671.

It is an arithmetic number, because the mean of its divisors is an integer number (40337034037338).

Almost surely, 2^{121011102112011} is an apocalyptic number.

121011102112011 is a deficient number, since it is larger than the sum of its proper divisors (40337034037341).

121011102112011 is an equidigital number, since it uses as much as digits as its factorization.

121011102112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40337034037340.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121011102112011 its reverse (110211201110121), we get a palindrome (231222303222132).

The spelling of 121011102112011 in words is "one hundred twenty-one trillion, eleven billion, one hundred two million, one hundred twelve thousand, eleven".