121311134211 has 32 divisors (see below), whose sum is σ = 172045808640. Its totient is φ = 75887473536.

The previous prime is 121311134143. The next prime is 121311134213. The reversal of 121311134211 is 112431113121.

It is a happy number.

It is not a de Polignac number, because 121311134211 - 2¹⁹ = 121310609923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121311134213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2834010 + ... + 2876496.

It is an arithmetic number, because the mean of its divisors is an integer number (5376431520).

Almost surely, 2^121311134211 is an apocalyptic number.

121311134211 is a deficient number, since it is larger than the sum of its proper divisors (50734674429).

121311134211 is a wasteful number, since it uses less digits than its factorization.

121311134211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43443.

The product of its digits is 144, while the sum is 21.

Adding to 121311134211 its reverse (112431113121), we get a palindrome (233742247332).

The spelling of 121311134211 in words is "one hundred twenty-one billion, three hundred eleven million, one hundred thirty-four thousand, two hundred eleven".