111021201111020 has 24 divisors (see below), whose sum is σ = 233175268335744. Its totient is φ = 44402624062976.

The previous prime is 111021201111017. The next prime is 111021201111047. The reversal of 111021201111020 is 20111102120111.

It is a super-2 number, since 2×111021201111020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111021201110986 and 111021201111004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365868389 + ... + 366171708.

It is an arithmetic number, because the mean of its divisors is an integer number (9715636180656).

Almost surely, 2^{111021201111020} is an apocalyptic number.

111021201111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021201111020 is an abundant number, since it is smaller than the sum of its proper divisors (122154067224724).

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

111021201111020 is a wasteful number, since it uses less digits than its factorization.

111021201111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732047689 (or 732047687 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111021201111020 its reverse (20111102120111), we get a palindrome (131132303231131).

The spelling of 111021201111020 in words is "one hundred eleven trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, twenty".