111001012121 has 8 divisors (see below), whose sum is σ = 111754144800. Its totient is φ = 110250370048.

The previous prime is 111001012099. The next prime is 111001012147. The reversal of 111001012121 is 121210100111.

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 111001012121 - 2²² = 110996817817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001012721) 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, 533171 + ... + 711528.

It is an arithmetic number, because the mean of its divisors is an integer number (13969268100).

Almost surely, 2^111001012121 is an apocalyptic number.

It is an amenable number.

111001012121 is a deficient number, since it is larger than the sum of its proper divisors (753132679).

111001012121 is a wasteful number, since it uses less digits than its factorization.

111001012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245303.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111001012121 its reverse (121210100111), we get a palindrome (232211112232).

The spelling of 111001012121 in words is "one hundred eleven billion, one million, twelve thousand, one hundred twenty-one".