111020012212101 has 64 divisors (see below), whose sum is σ = 167855977036800. Its totient is φ = 64845267158016.

The previous prime is 111020012212099. The next prime is 111020012212127. The reversal of 111020012212101 is 101212210020111.

It is a happy number.

It is not a de Polignac number, because 111020012212101 - 2¹ = 111020012212099 is a prime.

It is a super-2 number, since 2×111020012212101² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020012212171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125506975 + ... + 126388451.

It is an arithmetic number, because the mean of its divisors is an integer number (2622749641200).

Almost surely, 2^{111020012212101} is an apocalyptic number.

It is an amenable number.

111020012212101 is a deficient number, since it is larger than the sum of its proper divisors (56835964824699).

111020012212101 is a wasteful number, since it uses less digits than its factorization.

111020012212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883778.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111020012212101 its reverse (101212210020111), we get a palindrome (212232222232212).

The spelling of 111020012212101 in words is "one hundred eleven trillion, twenty billion, twelve million, two hundred twelve thousand, one hundred one".