111121031200221 has 48 divisors (see below), whose sum is σ = 184707346636800. Its totient is φ = 63059753673504.

The previous prime is 111121031200181. The next prime is 111121031200243. The reversal of 111121031200221 is 122002130121111.

It is a happy number.

111121031200221 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 210 + 31 + 200 + 221 = 666.

It is not a de Polignac number, because 111121031200221 - 2¹³ = 111121031192029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111121031200194 and 111121031200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121031200121) 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, 4528611 + ... + 15580448.

It is an arithmetic number, because the mean of its divisors is an integer number (3848069721600).

Almost surely, 2^{111121031200221} is an apocalyptic number.

It is an amenable number.

111121031200221 is a deficient number, since it is larger than the sum of its proper divisors (73586315436579).

111121031200221 is a wasteful number, since it uses less digits than its factorization.

111121031200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20109678 (or 20109675 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111121031200221 its reverse (122002130121111), we get a palindrome (233123161321332).

The spelling of 111121031200221 in words is "one hundred eleven trillion, one hundred twenty-one billion, thirty-one million, two hundred thousand, two hundred twenty-one".