221112201101121 has 32 divisors (see below), whose sum is σ = 359418676947840. Its totient is φ = 133232785358400.

The previous prime is 221112201101117. The next prime is 221112201101131. The reversal of 221112201101121 is 121101102211122.

It is a happy number.

221112201101121 is a `hidden beast` number, since 2 + 211 + 1 + 220 + 110 + 1 + 121 = 666.

221112201101121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221112201101121 - 2² = 221112201101117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221112201101094 and 221112201101103.

It is not an unprimeable number, because it can be changed into a prime (221112201101131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2151640890 + ... + 2151743651.

It is an arithmetic number, because the mean of its divisors is an integer number (11231833654620).

Almost surely, 2^{221112201101121} is an apocalyptic number.

It is an amenable number.

221112201101121 is a deficient number, since it is larger than the sum of its proper divisors (138306475846719).

221112201101121 is a wasteful number, since it uses less digits than its factorization.

221112201101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303384734 (or 4303384728 counting only the distinct ones).

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

Adding to 221112201101121 its reverse (121101102211122), we get a palindrome (342213303312243).

The spelling of 221112201101121 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred one thousand, one hundred twenty-one".