121211313331 has 8 divisors (see below), whose sum is σ = 122151268800. Its totient is φ = 120271580520.

The previous prime is 121211313287. The next prime is 121211313337. The reversal of 121211313331 is 133313112121.

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

It is a cyclic number.

It is not a de Polignac number, because 121211313331 - 2¹⁵ = 121211280563 is a prime.

It is a super-2 number, since 2×121211313331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211313337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135660 + ... + 1237798.

It is an arithmetic number, because the mean of its divisors is an integer number (15268908600).

Almost surely, 2^121211313331 is an apocalyptic number.

121211313331 is a deficient number, since it is larger than the sum of its proper divisors (939955469).

121211313331 is a wasteful number, since it uses less digits than its factorization.

121211313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111329.

The product of its digits is 324, while the sum is 22.

Adding to 121211313331 its reverse (133313112121), we get a palindrome (254524425452).

The spelling of 121211313331 in words is "one hundred twenty-one billion, two hundred eleven million, three hundred thirteen thousand, three hundred thirty-one".