121220302312331 has 8 divisors (see below), whose sum is σ = 123580429766640. Its totient is φ = 118862876781792.

The previous prime is 121220302312313. The next prime is 121220302312337. The reversal of 121220302312331 is 133213203022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220302312331 is a prime.

It is a super-2 number, since 2×121220302312331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121220302312331.

It is not an unprimeable number, because it can be changed into a prime (121220302312337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675390341 + ... + 675569798.

It is an arithmetic number, because the mean of its divisors is an integer number (15447553720830).

Almost surely, 2^{121220302312331} is an apocalyptic number.

121220302312331 is a deficient number, since it is larger than the sum of its proper divisors (2360127454309).

121220302312331 is a wasteful number, since it uses less digits than its factorization.

121220302312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350961885.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 121220302312331 its reverse (133213203022121), we get a palindrome (254433505334452).

The spelling of 121220302312331 in words is "one hundred twenty-one trillion, two hundred twenty billion, three hundred two million, three hundred twelve thousand, three hundred thirty-one".