1111201021100 has 36 divisors (see below), whose sum is σ = 2419160700264. Its totient is φ = 443032577280.

The previous prime is 1111201021069. The next prime is 1111201021103. The reversal of 1111201021100 is 11201021111.

It is not an unprimeable number, because it can be changed into a prime (1111201021103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18067037 + ... + 18128436.

Almost surely, 2^{1111201021100} is an apocalyptic number.

1111201021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111201021100 is an abundant number, since it is smaller than the sum of its proper divisors (1307959679164).

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

1111201021100 is a wasteful number, since it uses less digits than its factorization.

1111201021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36195794 (or 36195787 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1111201021100 its sum of digits (11), we get a palindrome (1111201021111).

Adding to 1111201021100 its reverse (11201021111), we get a palindrome (1122402042211).

The spelling of 1111201021100 in words is "one trillion, one hundred eleven billion, two hundred one million, twenty-one thousand, one hundred".