112012221111221 has 8 divisors (see below), whose sum is σ = 118609999371864. Its totient is φ = 105415423303680.

The previous prime is 112012221111211. The next prime is 112012221111227. The reversal of 112012221111221 is 122111122210211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27459800844100 + 84552420267121 = 5240210^2 + 9195239^2 .

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-112012221111221 is a prime.

It is a super-2 number, since 2×112012221111221² (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 = 112012221111193 and 112012221111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012221111227) 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, 244878050 + ... + 245335043.

It is an arithmetic number, because the mean of its divisors is an integer number (14826249921483).

Almost surely, 2^{112012221111221} is an apocalyptic number.

It is an amenable number.

112012221111221 is a deficient number, since it is larger than the sum of its proper divisors (6597778260643).

112012221111221 is a wasteful number, since it uses less digits than its factorization.

112012221111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490226551.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 112012221111221 its reverse (122111122210211), we get a palindrome (234123343321432).

The spelling of 112012221111221 in words is "one hundred twelve trillion, twelve billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty-one".