111102101021020 has 24 divisors (see below), whose sum is σ = 233884863046800. Its totient is φ = 44332183093632.

The previous prime is 111102101020979. The next prime is 111102101021029. The reversal of 111102101021020 is 20120101201111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102101021029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6791073790 + ... + 6791090149.

It is an arithmetic number, because the mean of its divisors is an integer number (9745202626950).

Almost surely, 2^{111102101021020} is an apocalyptic number.

111102101021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111102101021020 is an abundant number, since it is smaller than the sum of its proper divisors (122782762025780).

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

111102101021020 is a wasteful number, since it uses less digits than its factorization.

111102101021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13582164357 (or 13582164355 counting only the distinct ones).

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

Adding to 111102101021020 its reverse (20120101201111), we get a palindrome (131222202222131).

The spelling of 111102101021020 in words is "one hundred eleven trillion, one hundred two billion, one hundred one million, twenty-one thousand, twenty".