1100102201021 has 4 divisors (see below), whose sum is σ = 1100331346044. Its totient is φ = 1099873056000.

The previous prime is 1100102200973. The next prime is 1100102201039. The reversal of 1100102201021 is 1201022010011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263773660921 + 836328540100 = 513589^2 + 914510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100102201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100102200993 and 1100102201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100102221021) 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 3 ways as a sum of consecutive naturals, for example, 114565310 + ... + 114574911.

It is an arithmetic number, because the mean of its divisors is an integer number (275082836511).

Almost surely, 2^{1100102201021} is an apocalyptic number.

It is an amenable number.

1100102201021 is a deficient number, since it is larger than the sum of its proper divisors (229145023).

1100102201021 is an equidigital number, since it uses as much as digits as its factorization.

1100102201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229145022.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100102201021 its reverse (1201022010011), we get a palindrome (2301124211032).

The spelling of 1100102201021 in words is "one trillion, one hundred billion, one hundred two million, two hundred one thousand, twenty-one".