111100010100121 has 48 divisors (see below), whose sum is σ = 130886823314304. Its totient is φ = 92366659279872.

The previous prime is 111100010100083. The next prime is 111100010100133. The reversal of 111100010100121 is 121001010001111.

It is not a de Polignac number, because 111100010100121 - 2¹⁷ = 111100009969049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100010100098 and 111100010100107.

It is not an unprimeable number, because it can be changed into a prime (111100010100161) 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, 546723091 + ... + 546926263.

It is an arithmetic number, because the mean of its divisors is an integer number (2726808819048).

Almost surely, 2^{111100010100121} is an apocalyptic number.

It is an amenable number.

111100010100121 is a deficient number, since it is larger than the sum of its proper divisors (19786813214183).

111100010100121 is a wasteful number, since it uses less digits than its factorization.

111100010100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203570 (or 203497 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 111100010100121 its reverse (121001010001111), we get a palindrome (232101020101232).

The spelling of 111100010100121 in words is "one hundred eleven trillion, one hundred billion, ten million, one hundred thousand, one hundred twenty-one".