121711231435 has 16 divisors (see below), whose sum is σ = 151269611040. Its totient is φ = 94011339744.

The previous prime is 121711231399. The next prime is 121711231471. The reversal of 121711231435 is 534132117121.

It is an interprime number because it is at equal distance from previous prime (121711231399) and next prime (121711231471).

It is not a de Polignac number, because 121711231435 - 2²⁵ = 121677677003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121711231397 and 121711231406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377097 + ... + 620986.

It is an arithmetic number, because the mean of its divisors is an integer number (9454350690).

Almost surely, 2^121711231435 is an apocalyptic number.

121711231435 is a deficient number, since it is larger than the sum of its proper divisors (29558379605).

121711231435 is an frugal number, since it uses more digits than its factorization.

121711231435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998175 (or 998117 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

Adding to 121711231435 its reverse (534132117121), we get a palindrome (655843348556).

The spelling of 121711231435 in words is "one hundred twenty-one billion, seven hundred eleven million, two hundred thirty-one thousand, four hundred thirty-five".