112212111001221 has 48 divisors (see below), whose sum is σ = 202144974265728. Its totient is φ = 58272961161600.

The previous prime is 112212111001201. The next prime is 112212111001357. The reversal of 112212111001221 is 122100111212211.

It is a happy number.

112212111001221 is a `hidden beast` number, since 1 + 1 + 221 + 211 + 10 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 112212111001221 - 2¹⁷ = 112212110870149 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112212111001194 and 112212111001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112212111001201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24327966 + ... + 28570511.

It is an arithmetic number, because the mean of its divisors is an integer number (4211353630536).

Almost surely, 2^{112212111001221} is an apocalyptic number.

112212111001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112212111001221 is a deficient number, since it is larger than the sum of its proper divisors (89932863264507).

112212111001221 is a wasteful number, since it uses less digits than its factorization.

112212111001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52901562 (or 52901559 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 112212111001221 its reverse (122100111212211), we get a palindrome (234312222213432).

The spelling of 112212111001221 in words is "one hundred twelve trillion, two hundred twelve billion, one hundred eleven million, one thousand, two hundred twenty-one".