1111220202100 has 18 divisors (see below), whose sum is σ = 2411347838774. Its totient is φ = 444488080800.

The previous prime is 1111220202061. The next prime is 1111220202107. The reversal of 1111220202100 is 12020221111.

It can be written as a sum of positive squares in 3 ways, for example, as 299368745316 + 811851456784 = 547146^2 + 901028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5556100911 + ... + 5556101110.

Almost surely, 2^{1111220202100} is an apocalyptic number.

1111220202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111220202100 is an abundant number, since it is smaller than the sum of its proper divisors (1300127636674).

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

1111220202100 is a wasteful number, since it uses less digits than its factorization.

1111220202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112202035 (or 11112202028 counting only the distinct ones).

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

Adding to 1111220202100 its reverse (12020221111), we get a palindrome (1123240423211).

The spelling of 1111220202100 in words is "one trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred".