111020021211111 has 8 divisors (see below), whose sum is σ = 148778099491824. Its totient is φ = 73637645202240.

The previous prime is 111020021211061. The next prime is 111020021211131. The reversal of 111020021211111 is 111112120020111.

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

It is not a de Polignac number, because 111020021211111 - 2¹³ = 111020021202919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020021211131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93925567270 + ... + 93925568451.

It is an arithmetic number, because the mean of its divisors is an integer number (18597262436478).

Almost surely, 2^{111020021211111} is an apocalyptic number.

111020021211111 is a deficient number, since it is larger than the sum of its proper divisors (37758078280713).

111020021211111 is a wasteful number, since it uses less digits than its factorization.

111020021211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187851135921.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111020021211111 its reverse (111112120020111), we get a palindrome (222132141231222).

The spelling of 111020021211111 in words is "one hundred eleven trillion, twenty billion, twenty-one million, two hundred eleven thousand, one hundred eleven".