111000000102121 has 8 divisors (see below), whose sum is σ = 126570135863304. Its totient is φ = 96434389228800.

The previous prime is 111000000102119. The next prime is 111000000102181. The reversal of 111000000102121 is 121201000000111.

It can be written as a sum of positive squares in 4 ways, for example, as 41561694410896 + 69438305691225 = 6446836^2 + 8332965^2 .

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 111000000102121 - 2¹ = 111000000102119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000000102098 and 111000000102107.

It is not an unprimeable number, because it can be changed into a prime (111000000102181) 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, 251131221730 + ... + 251131222171.

It is an arithmetic number, because the mean of its divisors is an integer number (15821266982913).

Almost surely, 2^{111000000102121} is an apocalyptic number.

It is an amenable number.

111000000102121 is a deficient number, since it is larger than the sum of its proper divisors (15570135761183).

111000000102121 is a wasteful number, since it uses less digits than its factorization.

111000000102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502262443931.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111000000102121 its reverse (121201000000111), we get a palindrome (232201000102232).

The spelling of 111000000102121 in words is "one hundred eleven trillion, one hundred two thousand, one hundred twenty-one".