111212020200100 has 18 divisors (see below), whose sum is σ = 241330083834434. Its totient is φ = 44484808080000.

The previous prime is 111212020200089. The next prime is 111212020200107. The reversal of 111212020200100 is 1002020212111.

It can be written as a sum of positive squares in 3 ways, for example, as 20416010854464 + 90796009345636 = 4518408^2 + 9528694^2 .

It is a super-2 number, since 2×111212020200100² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212020200107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556060100901 + ... + 556060101100.

Almost surely, 2^{111212020200100} is an apocalyptic number.

111212020200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212020200100 is an abundant number, since it is smaller than the sum of its proper divisors (130118063634334).

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

111212020200100 is a wasteful number, since it uses less digits than its factorization.

111212020200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112120202015 (or 1112120202008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111212020200100 its reverse (1002020212111), we get a palindrome (112214040412211).

The spelling of 111212020200100 in words is "one hundred eleven trillion, two hundred twelve billion, twenty million, two hundred thousand, one hundred".