111211311210231 has 8 divisors (see below), whose sum is σ = 148282303713904. Its totient is φ = 74140596423360.

The previous prime is 111211311210227. The next prime is 111211311210301. The reversal of 111211311210231 is 132012113112111.

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

It is not a de Polignac number, because 111211311210231 - 2² = 111211311210227 is a prime.

It is a super-2 number, since 2×111211311210231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211311210198 and 111211311210207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211311210431) 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, 68493016 + ... + 70097901.

It is an arithmetic number, because the mean of its divisors is an integer number (18535287964238).

Almost surely, 2^{111211311210231} is an apocalyptic number.

111211311210231 is a deficient number, since it is larger than the sum of its proper divisors (37070992503673).

111211311210231 is a wasteful number, since it uses less digits than its factorization.

111211311210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138858401.

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 111211311210231 its reverse (132012113112111), we get a palindrome (243223424322342).

The spelling of 111211311210231 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred eleven million, two hundred ten thousand, two hundred thirty-one".