1100120102021 has 8 divisors (see below), whose sum is σ = 1121017330584. Its totient is φ = 1079228067840.

The previous prime is 1100120101991. The next prime is 1100120102027. The reversal of 1100120102021 is 1202010210011.

It can be written as a sum of positive squares in 4 ways, for example, as 230125521796 + 869994580225 = 479714^2 + 932735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1100120102021 - 2¹⁸ = 1100119839877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100120101993 and 1100120102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100120102027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869660 + ... + 1719461.

It is an arithmetic number, because the mean of its divisors is an integer number (140127166323).

Almost surely, 2^{1100120102021} is an apocalyptic number.

It is an amenable number.

1100120102021 is a deficient number, since it is larger than the sum of its proper divisors (20897228563).

1100120102021 is an equidigital number, since it uses as much as digits as its factorization.

1100120102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597191.

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

Adding to 1100120102021 its reverse (1202010210011), we get a palindrome (2302130312032).

The spelling of 1100120102021 in words is "one trillion, one hundred billion, one hundred twenty million, one hundred two thousand, twenty-one".