111021200120101 has 4 divisors (see below), whose sum is σ = 112584878995104. Its totient is φ = 109457521245100.

The previous prime is 111021200120093. The next prime is 111021200120153. The reversal of 111021200120101 is 101021002120111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111021200120101 - 2³ = 111021200120093 is a prime.

It is a super-3 number, since 3×111021200120101³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021200120191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781839437395 + ... + 781839437536.

It is an arithmetic number, because the mean of its divisors is an integer number (28146219748776).

Almost surely, 2^{111021200120101} is an apocalyptic number.

It is an amenable number.

111021200120101 is a deficient number, since it is larger than the sum of its proper divisors (1563678875003).

111021200120101 is an equidigital number, since it uses as much as digits as its factorization.

111021200120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563678875002.

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

Adding to 111021200120101 its reverse (101021002120111), we get a palindrome (212042202240212).

The spelling of 111021200120101 in words is "one hundred eleven trillion, twenty-one billion, two hundred million, one hundred twenty thousand, one hundred one".