121302203131 has 4 divisors (see below), whose sum is σ = 121363253032. Its totient is φ = 121241153232.

The previous prime is 121302203129. The next prime is 121302203147. The reversal of 121302203131 is 131302203121.

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 121302203131 - 2¹ = 121302203129 is a prime.

It is a super-2 number, since 2×121302203131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121302203099 and 121302203108.

It is not an unprimeable number, because it can be changed into a prime (121302203111) 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 3 ways as a sum of consecutive naturals, for example, 30521970 + ... + 30525943.

It is an arithmetic number, because the mean of its divisors is an integer number (30340813258).

Almost surely, 2^121302203131 is an apocalyptic number.

121302203131 is a deficient number, since it is larger than the sum of its proper divisors (61049901).

121302203131 is an equidigital number, since it uses as much as digits as its factorization.

121302203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61049900.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121302203131 its reverse (131302203121), we get a palindrome (252604406252).

The spelling of 121302203131 in words is "one hundred twenty-one billion, three hundred two million, two hundred three thousand, one hundred thirty-one".