111012100221001 has 16 divisors (see below), whose sum is σ = 132390299593728. Its totient is φ = 91013932746000.

The previous prime is 111012100220867. The next prime is 111012100221007. The reversal of 111012100221001 is 100122001210111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111012100221001 - 2¹³ = 111012100212809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111012100221007) 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, 1629175 + ... + 14989276.

It is an arithmetic number, because the mean of its divisors is an integer number (8274393724608).

Almost surely, 2^{111012100221001} is an apocalyptic number.

It is an amenable number.

111012100221001 is a deficient number, since it is larger than the sum of its proper divisors (21378199372727).

111012100221001 is a wasteful number, since it uses less digits than its factorization.

111012100221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16659972.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012100221001 its reverse (100122001210111), we get a palindrome (211134101431112).

The spelling of 111012100221001 in words is "one hundred eleven trillion, twelve billion, one hundred million, two hundred twenty-one thousand, one".