121132311535 has 4 divisors (see below), whose sum is σ = 145358773848. Its totient is φ = 96905849224.

The previous prime is 121132311499. The next prime is 121132311541. The reversal of 121132311535 is 535113231121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121132311535 - 2⁹ = 121132311023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12113231149 + ... + 12113231158.

It is an arithmetic number, because the mean of its divisors is an integer number (36339693462).

Almost surely, 2^121132311535 is an apocalyptic number.

121132311535 is a deficient number, since it is larger than the sum of its proper divisors (24226462313).

121132311535 is an equidigital number, since it uses as much as digits as its factorization.

121132311535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24226462312.

The product of its digits is 2700, while the sum is 28.

Adding to 121132311535 its reverse (535113231121), we get a palindrome (656245542656).

The spelling of 121132311535 in words is "one hundred twenty-one billion, one hundred thirty-two million, three hundred eleven thousand, five hundred thirty-five".