111012220201021 has 4 divisors (see below), whose sum is σ = 111012382281600. Its totient is φ = 111012058120444.

The previous prime is 111012220200983. The next prime is 111012220201087. The reversal of 111012220201021 is 120102022210111.

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 111012220201021 - 2¹⁵ = 111012220168253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012220200986 and 111012220201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012220261021) 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, 80008531 + ... + 81384208.

It is an arithmetic number, because the mean of its divisors is an integer number (27753095570400).

Almost surely, 2^{111012220201021} is an apocalyptic number.

It is an amenable number.

111012220201021 is a deficient number, since it is larger than the sum of its proper divisors (162080579).

111012220201021 is an equidigital number, since it uses as much as digits as its factorization.

111012220201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162080578.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111012220201021 its reverse (120102022210111), we get a palindrome (231114242411132).

The spelling of 111012220201021 in words is "one hundred eleven trillion, twelve billion, two hundred twenty million, two hundred one thousand, twenty-one".