121103312522 has 32 divisors (see below), whose sum is σ = 201272211072. Its totient is φ = 54357428224.

The previous prime is 121103312521. The next prime is 121103312531. The reversal of 121103312522 is 225213301121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (121103312521) by changing a digit.

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, 56693 + ... + 495399.

It is an arithmetic number, because the mean of its divisors is an integer number (6289756596).

Almost surely, 2^121103312522 is an apocalyptic number.

121103312522 is a deficient number, since it is larger than the sum of its proper divisors (80168898550).

121103312522 is a wasteful number, since it uses less digits than its factorization.

121103312522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439102.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 121103312522 its reverse (225213301121), we get a palindrome (346316613643).

The spelling of 121103312522 in words is "one hundred twenty-one billion, one hundred three million, three hundred twelve thousand, five hundred twenty-two".