111020112001021 has 8 divisors (see below), whose sum is σ = 113793925440384. Its totient is φ = 108249441696480.

The previous prime is 111020112001003. The next prime is 111020112001091. The reversal of 111020112001021 is 120100211020111.

It is a happy number.

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

It is not a de Polignac number, because 111020112001021 - 2⁹ = 111020112000509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020112000992 and 111020112001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020112001091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785712181 + ... + 785853466.

It is an arithmetic number, because the mean of its divisors is an integer number (14224240680048).

Almost surely, 2^{111020112001021} is an apocalyptic number.

It is an amenable number.

111020112001021 is a deficient number, since it is larger than the sum of its proper divisors (2773813439363).

111020112001021 is a wasteful number, since it uses less digits than its factorization.

111020112001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571567411.

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

Adding to 111020112001021 its reverse (120100211020111), we get a palindrome (231120323021132).

The spelling of 111020112001021 in words is "one hundred eleven trillion, twenty billion, one hundred twelve million, one thousand, twenty-one".