121231001133312 has 144 divisors (see below), whose sum is σ = 369141236365440. Its totient is φ = 34600142831616.

The previous prime is 121231001133233. The next prime is 121231001133349. The reversal of 121231001133312 is 213331100132121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7142623 + ... + 17131230.

Almost surely, 2^{121231001133312} is an apocalyptic number.

121231001133312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121231001133312 is an abundant number, since it is smaller than the sum of its proper divisors (247910235232128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121231001133312 is an equidigital number, since it uses as much as digits as its factorization.

121231001133312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24274808 (or 24274794 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 121231001133312 its reverse (213331100132121), we get a palindrome (334562101265433).

The spelling of 121231001133312 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, one million, one hundred thirty-three thousand, three hundred twelve".