111222100121 has 8 divisors (see below), whose sum is σ = 122003551488. Its totient is φ = 100552374000.

The previous prime is 111222100103. The next prime is 111222100141. The reversal of 111222100121 is 121001222111.

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

It is a cyclic number.

It is not a de Polignac number, because 111222100121 - 2⁶ = 111222100057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111222100096 and 111222100105.

It is not an unprimeable number, because it can be changed into a prime (111222100141) 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, 27929225 + ... + 27933206.

It is an arithmetic number, because the mean of its divisors is an integer number (15250443936).

Almost surely, 2^111222100121 is an apocalyptic number.

111222100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111222100121 is a deficient number, since it is larger than the sum of its proper divisors (10781451367).

111222100121 is a wasteful number, since it uses less digits than its factorization.

111222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55862623.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111222100121 its reverse (121001222111), we get a palindrome (232223322232).

The spelling of 111222100121 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".