10112111212122 has 20 divisors (see below), whose sum is σ = 22658619568266. Its totient is φ = 3370703737320.

The previous prime is 10112111212103. The next prime is 10112111212123. The reversal of 10112111212122 is 22121211121101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10103682319641 + 8428892481 = 3178629^2 + 91809^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10112111212095 and 10112111212104.

It is not an unprimeable number, because it can be changed into a prime (10112111212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31210219629 + ... + 31210219952.

Almost surely, 2^{10112111212122} is an apocalyptic number.

10112111212122 is an abundant number, since it is smaller than the sum of its proper divisors (12546508356144).

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

10112111212122 is an equidigital number, since it uses as much as digits as its factorization.

10112111212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62420439595 (or 62420439586 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 10112111212122 its reverse (22121211121101), we get a palindrome (32233322333223).

The spelling of 10112111212122 in words is "ten trillion, one hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".