1100012110021 has 4 divisors (see below), whose sum is σ = 1200013210944. Its totient is φ = 1000011009100.

The previous prime is 1100012109997. The next prime is 1100012110027. The reversal of 1100012110021 is 1200112100011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100012110021 - 2⁷ = 1100012109893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100012110027) 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, 50000550445 + ... + 50000550466.

It is an arithmetic number, because the mean of its divisors is an integer number (300003302736).

Almost surely, 2^{1100012110021} is an apocalyptic number.

1100012110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100012110021 is a deficient number, since it is larger than the sum of its proper divisors (100001100923).

1100012110021 is a wasteful number, since it uses less digits than its factorization.

1100012110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100001100922.

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

Adding to 1100012110021 its reverse (1200112100011), we get a palindrome (2300124210032).

The spelling of 1100012110021 in words is "one trillion, one hundred billion, twelve million, one hundred ten thousand, twenty-one".