111030212121 has 8 divisors (see below), whose sum is σ = 154476816960. Its totient is φ = 70801874352.

The previous prime is 111030212093. The next prime is 111030212149. The reversal of 111030212121 is 121212030111.

It is an interprime number because it is at equal distance from previous prime (111030212093) and next prime (111030212149).

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

It is not a de Polignac number, because 111030212121 - 2¹⁹ = 111029687833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111030212121.

It is not an unprimeable number, because it can be changed into a prime (111030212191) 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, 804566686 + ... + 804566823.

It is an arithmetic number, because the mean of its divisors is an integer number (19309602120).

Almost surely, 2^111030212121 is an apocalyptic number.

It is an amenable number.

111030212121 is a deficient number, since it is larger than the sum of its proper divisors (43446604839).

111030212121 is a wasteful number, since it uses less digits than its factorization.

111030212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609133535.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111030212121 its reverse (121212030111), we get a palindrome (232242242232).

The spelling of 111030212121 in words is "one hundred eleven billion, thirty million, two hundred twelve thousand, one hundred twenty-one".