112121031032221 has 4 divisors (see below), whose sum is σ = 112121857915452. Its totient is φ = 112120204148992.

The previous prime is 112121031032141. The next prime is 112121031032249. The reversal of 112121031032221 is 122230130121211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82088329388121 + 30032701644100 = 9060261^2 + 5480210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112121031032221 is a prime.

It is a super-2 number, since 2×112121031032221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112121031032192 and 112121031032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121031032291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413238190 + ... + 413509423.

It is an arithmetic number, because the mean of its divisors is an integer number (28030464478863).

Almost surely, 2^{112121031032221} is an apocalyptic number.

It is an amenable number.

112121031032221 is a deficient number, since it is larger than the sum of its proper divisors (826883231).

112121031032221 is an equidigital number, since it uses as much as digits as its factorization.

112121031032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826883230.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 112121031032221 its reverse (122230130121211), we get a palindrome (234351161153432).

The spelling of 112121031032221 in words is "one hundred twelve trillion, one hundred twenty-one billion, thirty-one million, thirty-two thousand, two hundred twenty-one".