121103012231 has 16 divisors (see below), whose sum is σ = 132186098400. Its totient is φ = 110509660800.

The previous prime is 121103012197. The next prime is 121103012293. The reversal of 121103012231 is 132210301121.

It is a cyclic number.

It is not a de Polignac number, because 121103012231 - 2²⁶ = 121035903367 is a prime.

It is a super-2 number, since 2×121103012231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103012431) 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, 29060 + ... + 493001.

It is an arithmetic number, because the mean of its divisors is an integer number (8261631150).

Almost surely, 2^121103012231 is an apocalyptic number.

121103012231 is a deficient number, since it is larger than the sum of its proper divisors (11083086169).

121103012231 is a wasteful number, since it uses less digits than its factorization.

121103012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522530.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121103012231 its reverse (132210301121), we get a palindrome (253313313352).

The spelling of 121103012231 in words is "one hundred twenty-one billion, one hundred three million, twelve thousand, two hundred thirty-one".