111200222101221 has 24 divisors (see below), whose sum is σ = 175225506150240. Its totient is φ = 67393722559200.

The previous prime is 111200222101211. The next prime is 111200222101231. The reversal of 111200222101221 is 122101222002111.

111200222101221 is a `hidden beast` number, since 1 + 1 + 120 + 0 + 222 + 101 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (111200222101211) and next prime (111200222101231).

It is not a de Polignac number, because 111200222101221 - 2¹⁰ = 111200222100197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111200222101194 and 111200222101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200222101211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16821175 + ... + 22480043.

It is an arithmetic number, because the mean of its divisors is an integer number (7301062756260).

Almost surely, 2^{111200222101221} is an apocalyptic number.

111200222101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200222101221 is a deficient number, since it is larger than the sum of its proper divisors (64025284049019).

111200222101221 is a wasteful number, since it uses less digits than its factorization.

111200222101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857377 (or 5857374 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111200222101221 its reverse (122101222002111), we get a palindrome (233301444103332).

The spelling of 111200222101221 in words is "one hundred eleven trillion, two hundred billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-one".