121101212331 has 48 divisors (see below), whose sum is σ = 194491514880. Its totient is φ = 71997932160.

The previous prime is 121101212329. The next prime is 121101212363. The reversal of 121101212331 is 133212101121.

121101212331 is a `hidden beast` number, since 1 + 21 + 101 + 212 + 331 = 666.

It is not a de Polignac number, because 121101212331 - 2¹ = 121101212329 is a prime.

It is a super-2 number, since 2×121101212331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121101212371) 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 47 ways as a sum of consecutive naturals, for example, 1064886 + ... + 1173108.

It is an arithmetic number, because the mean of its divisors is an integer number (4051906560).

Almost surely, 2^121101212331 is an apocalyptic number.

121101212331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121101212331 is a deficient number, since it is larger than the sum of its proper divisors (73390302549).

121101212331 is a wasteful number, since it uses less digits than its factorization.

121101212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108456 (or 108453 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121101212331 its reverse (133212101121), we get a palindrome (254313313452).

The spelling of 121101212331 in words is "one hundred twenty-one billion, one hundred one million, two hundred twelve thousand, three hundred thirty-one".