121011233213 has 16 divisors (see below), whose sum is σ = 133753884096. Its totient is φ = 108769599360.

The previous prime is 121011233179. The next prime is 121011233219. The reversal of 121011233213 is 312332110121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121011233213 - 2¹⁰ = 121011232189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011233219) 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, 61706 + ... + 495812.

It is an arithmetic number, because the mean of its divisors is an integer number (8359617756).

Almost surely, 2^121011233213 is an apocalyptic number.

121011233213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121011233213 is a deficient number, since it is larger than the sum of its proper divisors (12742650883).

121011233213 is a wasteful number, since it uses less digits than its factorization.

121011233213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434684.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121011233213 its reverse (312332110121), we get a palindrome (433343343334).

The spelling of 121011233213 in words is "one hundred twenty-one billion, eleven million, two hundred thirty-three thousand, two hundred thirteen".