111102010002100 has 36 divisors (see below), whose sum is σ = 259636851069484. Its totient is φ = 41022280615680.

The previous prime is 111102010002097. The next prime is 111102010002121. The reversal of 111102010002100 is 1200010201111.

It can be written as a sum of positive squares in 6 ways, for example, as 11258628630544 + 99843381371556 = 3355388^2 + 9992166^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42731541009 + ... + 42731543608.

Almost surely, 2^{111102010002100} is an apocalyptic number.

111102010002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111102010002100 is an abundant number, since it is smaller than the sum of its proper divisors (148534841067384).

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

111102010002100 is a wasteful number, since it uses less digits than its factorization.

111102010002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85463084644 (or 85463084637 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111102010002100 its reverse (1200010201111), we get a palindrome (112302020203211).

The spelling of 111102010002100 in words is "one hundred eleven trillion, one hundred two billion, ten million, two thousand, one hundred".