112121212222021 has 8 divisors (see below), whose sum is σ = 112705456549088. Its totient is φ = 111537466614000.

The previous prime is 112121212221959. The next prime is 112121212222081. The reversal of 112121212222021 is 120222212121211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121212222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121212221983 and 112121212222001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121212222081) 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, 124228950 + ... + 125128231.

It is an arithmetic number, because the mean of its divisors is an integer number (14088182068636).

Almost surely, 2^{112121212222021} is an apocalyptic number.

It is an amenable number.

112121212222021 is a deficient number, since it is larger than the sum of its proper divisors (584244327067).

112121212222021 is a wasteful number, since it uses less digits than its factorization.

112121212222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249359523.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 112121212222021 its reverse (120222212121211), we get a palindrome (232343424343232).

The spelling of 112121212222021 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, twenty-one".