111212103101031 has 6 divisors (see below), whose sum is σ = 160639704479280. Its totient is φ = 74141402067348.

The previous prime is 111212103101009. The next prime is 111212103101069. The reversal of 111212103101031 is 130101301212111.

111212103101031 is a `hidden beast` number, since 1 + 112 + 1 + 210 + 310 + 1 + 0 + 31 = 666.

It is not a de Polignac number, because 111212103101031 - 2¹⁴ = 111212103084647 is a prime.

It is a super-2 number, since 2×111212103101031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212103100995 and 111212103101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212103181031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6178450172271 + ... + 6178450172288.

It is an arithmetic number, because the mean of its divisors is an integer number (26773284079880).

Almost surely, 2^{111212103101031} is an apocalyptic number.

111212103101031 is a deficient number, since it is larger than the sum of its proper divisors (49427601378249).

111212103101031 is a wasteful number, since it uses less digits than its factorization.

111212103101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12356900344565 (or 12356900344562 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 111212103101031 its reverse (130101301212111), we get a palindrome (241313404313142).

It can be divided in two parts, 11121210 and 3101031, that added together give a palindrome (14222241).

The spelling of 111212103101031 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred three million, one hundred one thousand, thirty-one".