1100120210021 has 16 divisors (see below), whose sum is σ = 1261965539328. Its totient is φ = 939447331200.

The previous prime is 1100120210011. The next prime is 1100120210023. The reversal of 1100120210021 is 1200120210011.

It is not a de Polignac number, because 1100120210021 - 2³⁰ = 1099046468197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100120209984 and 1100120210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100120210023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12586556 + ... + 12673658.

It is an arithmetic number, because the mean of its divisors is an integer number (78872846208).

Almost surely, 2^{1100120210021} is an apocalyptic number.

It is an amenable number.

1100120210021 is a deficient number, since it is larger than the sum of its proper divisors (161845329307).

1100120210021 is an equidigital number, since it uses as much as digits as its factorization.

1100120210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93812.

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

Adding to 1100120210021 its reverse (1200120210011), we get a palindrome (2300240420032).

The spelling of 1100120210021 in words is "one trillion, one hundred billion, one hundred twenty million, two hundred ten thousand, twenty-one".