21112202112122 has 8 divisors (see below), whose sum is σ = 34547239819872. Its totient is φ = 9596455505500.

The previous prime is 21112202112073. The next prime is 21112202112163. The reversal of 21112202112122 is 22121120221112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21112202112094 and 21112202112103.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 479822775254 + ... + 479822775297.

It is an arithmetic number, because the mean of its divisors is an integer number (4318404977484).

Almost surely, 2^{21112202112122} is an apocalyptic number.

21112202112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21112202112122 is a deficient number, since it is larger than the sum of its proper divisors (13435037707750).

21112202112122 is a wasteful number, since it uses less digits than its factorization.

21112202112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959645550564.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21112202112122 its reverse (22121120221112), we get a palindrome (43233322333234).

The spelling of 21112202112122 in words is "twenty-one trillion, one hundred twelve billion, two hundred two million, one hundred twelve thousand, one hundred twenty-two".