111200121200121 has 8 divisors (see below), whose sum is σ = 150053175595680. Its totient is φ = 73240240468992.

The previous prime is 111200121200083. The next prime is 111200121200131. The reversal of 111200121200121 is 121002121002111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111200121200121 - 2¹⁴ = 111200121183737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111200121200121.

It is not an unprimeable number, because it can be changed into a prime (111200121200131) 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, 223293415816 + ... + 223293416313.

It is an arithmetic number, because the mean of its divisors is an integer number (18756646949460).

Almost surely, 2^{111200121200121} is an apocalyptic number.

It is an amenable number.

111200121200121 is a deficient number, since it is larger than the sum of its proper divisors (38853054395559).

111200121200121 is an equidigital number, since it uses as much as digits as its factorization.

111200121200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446586832215.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111200121200121 its reverse (121002121002111), we get a palindrome (232202242202232).

The spelling of 111200121200121 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".