1100100021023 has 4 divisors (see below), whose sum is σ = 1100103294840. Its totient is φ = 1100096747208.

The previous prime is 1100100021019. The next prime is 1100100021079. The reversal of 1100100021023 is 3201200010011.

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

It is a cyclic number.

It is not a de Polignac number, because 1100100021023 - 2² = 1100100021019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100100020995 and 1100100021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100023023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066640 + ... + 1826997.

It is an arithmetic number, because the mean of its divisors is an integer number (275025823710).

Almost surely, 2^{1100100021023} is an apocalyptic number.

1100100021023 is a deficient number, since it is larger than the sum of its proper divisors (3273817).

1100100021023 is an equidigital number, since it uses as much as digits as its factorization.

1100100021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273816.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1100100021023 its reverse (3201200010011), we get a palindrome (4301300031034).

The spelling of 1100100021023 in words is "one trillion, one hundred billion, one hundred million, twenty-one thousand, twenty-three".