111211231130312 has 8 divisors (see below), whose sum is σ = 208521058369350. Its totient is φ = 55605615565152.

The previous prime is 111211231130291. The next prime is 111211231130369. The reversal of 111211231130312 is 213031132112111.

It can be written as a sum of positive squares in only one way, i.e., 80886891513796 + 30324339616516 = 8993714^2 + 5506754^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950701945637 + ... + 6950701945652.

Almost surely, 2^{111211231130312} is an apocalyptic number.

It is an amenable number.

111211231130312 is a deficient number, since it is larger than the sum of its proper divisors (97309827239038).

111211231130312 is a wasteful number, since it uses less digits than its factorization.

111211231130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13901403891295 (or 13901403891291 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111211231130312 its reverse (213031132112111), we get a palindrome (324242363242423).

The spelling of 111211231130312 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred thirty-one million, one hundred thirty thousand, three hundred twelve".