111001012010121 has 16 divisors (see below), whose sum is σ = 156712812977664. Its totient is φ = 69645248519424.

The previous prime is 111001012010117. The next prime is 111001012010137. The reversal of 111001012010121 is 121010210100111.

It is not a de Polignac number, because 111001012010121 - 2² = 111001012010117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111001012010097 and 111001012010106.

It is not an unprimeable number, because it can be changed into a prime (111001012010621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36740281 + ... + 39646566.

It is an arithmetic number, because the mean of its divisors is an integer number (9794550811104).

Almost surely, 2^{111001012010121} is an apocalyptic number.

It is an amenable number.

111001012010121 is a deficient number, since it is larger than the sum of its proper divisors (45711800967543).

111001012010121 is a wasteful number, since it uses less digits than its factorization.

111001012010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76415360.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111001012010121 its reverse (121010210100111), we get a palindrome (232011222110232).

The spelling of 111001012010121 in words is "one hundred eleven trillion, one billion, twelve million, ten thousand, one hundred twenty-one".