121711231434 has 128 divisors (see below), whose sum is σ = 292626432000. Its totient is φ = 33340197888.

The previous prime is 121711231399. The next prime is 121711231471. The reversal of 121711231434 is 434132117121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18111127 + ... + 18117845.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144000).

Almost surely, 2^121711231434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121711231434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146313216000).

121711231434 is an abundant number, since it is smaller than the sum of its proper divisors (170915200566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121711231434 is a wasteful number, since it uses less digits than its factorization.

121711231434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7492.

The product of its digits is 4032, while the sum is 30.

Adding to 121711231434 its reverse (434132117121), we get a palindrome (555843348555).

The spelling of 121711231434 in words is "one hundred twenty-one billion, seven hundred eleven million, two hundred thirty-one thousand, four hundred thirty-four".