121302753231 has 16 divisors (see below), whose sum is σ = 178673794560. Its totient is φ = 72586225920.

The previous prime is 121302753197. The next prime is 121302753239. The reversal of 121302753231 is 132357203121.

It is not a de Polignac number, because 121302753231 - 2¹⁵ = 121302720463 is a prime.

It is a super-2 number, since 2×121302753231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121302753239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23262210 + ... + 23267423.

It is an arithmetic number, because the mean of its divisors is an integer number (11167112160).

Almost surely, 2^121302753231 is an apocalyptic number.

121302753231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121302753231 is a deficient number, since it is larger than the sum of its proper divisors (57371041329).

121302753231 is a wasteful number, since it uses less digits than its factorization.

121302753231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46529726.

The product of its (nonzero) digits is 7560, while the sum is 30.

Adding to 121302753231 its reverse (132357203121), we get a palindrome (253659956352).

The spelling of 121302753231 in words is "one hundred twenty-one billion, three hundred two million, seven hundred fifty-three thousand, two hundred thirty-one".