21112230111122 has 4 divisors (see below), whose sum is σ = 31668345166686. Its totient is φ = 10556115055560.

The previous prime is 21112230111059. The next prime is 21112230111221. The reversal of 21112230111122 is 22111103221112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21046339841641 + 65890269481 = 4587629^2 + 256691^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21112230111094 and 21112230111103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278057527779 + ... + 5278057527782.

Almost surely, 2^{21112230111122} is an apocalyptic number.

21112230111122 is a deficient number, since it is larger than the sum of its proper divisors (10556115055564).

21112230111122 is a wasteful number, since it uses less digits than its factorization.

21112230111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556115055563.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 21112230111122 its reverse (22111103221112), we get a palindrome (43223333332234).

The spelling of 21112230111122 in words is "twenty-one trillion, one hundred twelve billion, two hundred thirty million, one hundred eleven thousand, one hundred twenty-two".