112121100222121 has 4 divisors (see below), whose sum is σ = 112272003453312. Its totient is φ = 111970196990932.

The previous prime is 112121100222119. The next prime is 112121100222191. The reversal of 112121100222121 is 121222001121211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112121100222121 - 2¹ = 112121100222119 is a prime.

It is a super-2 number, since 2×112121100222121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121100222191) 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, 75451614481 + ... + 75451615966.

It is an arithmetic number, because the mean of its divisors is an integer number (28068000863328).

Almost surely, 2^{112121100222121} is an apocalyptic number.

It is an amenable number.

112121100222121 is a deficient number, since it is larger than the sum of its proper divisors (150903231191).

112121100222121 is an equidigital number, since it uses as much as digits as its factorization.

112121100222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150903231190.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112121100222121 its reverse (121222001121211), we get a palindrome (233343101343332).

The spelling of 112121100222121 in words is "one hundred twelve trillion, one hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".