111101012220020 has 12 divisors (see below), whose sum is σ = 233312125662084. Its totient is φ = 44440404888000.

The previous prime is 111101012219947. The next prime is 111101012220101. The reversal of 111101012220020 is 20022210101111.

It can be written as a sum of positive squares in 2 ways, for example, as 36529428305764 + 74571583914256 = 6043958^2 + 8635484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111101012219977 and 111101012220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777525305481 + ... + 2777525305520.

It is an arithmetic number, because the mean of its divisors is an integer number (19442677138507).

Almost surely, 2^{111101012220020} is an apocalyptic number.

111101012220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101012220020 is an abundant number, since it is smaller than the sum of its proper divisors (122211113442064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101012220020 is a wasteful number, since it uses less digits than its factorization.

111101012220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555050611010 (or 5555050611008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111101012220020 its reverse (20022210101111), we get a palindrome (131123222321131).

The spelling of 111101012220020 in words is "one hundred eleven trillion, one hundred one billion, twelve million, two hundred twenty thousand, twenty".