121013021123111 has 16 divisors (see below), whose sum is σ = 136805736990720. Its totient is φ = 106268742084960.

The previous prime is 121013021123101. The next prime is 121013021123143. The reversal of 121013021123111 is 111321120310121.

It is not a de Polignac number, because 121013021123111 - 2¹⁰ = 121013021122087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013021123101) 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, 2544725795 + ... + 2544773348.

It is an arithmetic number, because the mean of its divisors is an integer number (8550358561920).

Almost surely, 2^{121013021123111} is an apocalyptic number.

121013021123111 is a deficient number, since it is larger than the sum of its proper divisors (15792715867609).

121013021123111 is a wasteful number, since it uses less digits than its factorization.

121013021123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089499246.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 121013021123111 its reverse (111321120310121), we get a palindrome (232334141433232).

The spelling of 121013021123111 in words is "one hundred twenty-one trillion, thirteen billion, twenty-one million, one hundred twenty-three thousand, one hundred eleven".