111000211002121 has 32 divisors (see below), whose sum is σ = 134251247923200. Its totient is φ = 89715301220160.

The previous prime is 111000211002113. The next prime is 111000211002143. The reversal of 111000211002121 is 121200112000111.

It is a happy number.

It is not a de Polignac number, because 111000211002121 - 2³ = 111000211002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111000211002101) 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, 110827975 + ... + 111825043.

It is an arithmetic number, because the mean of its divisors is an integer number (4195351497600).

Almost surely, 2^{111000211002121} is an apocalyptic number.

It is an amenable number.

111000211002121 is a deficient number, since it is larger than the sum of its proper divisors (23251036921079).

111000211002121 is an equidigital number, since it uses as much as digits as its factorization.

111000211002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006909.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111000211002121 its reverse (121200112000111), we get a palindrome (232200323002232).

The spelling of 111000211002121 in words is "one hundred eleven trillion, two hundred eleven million, two thousand, one hundred twenty-one".