1100220120021 has 32 divisors (see below), whose sum is σ = 1615217408640. Its totient is φ = 660594528000.

The previous prime is 1100220120011. The next prime is 1100220120053. The reversal of 1100220120021 is 1200210220011.

It is not a de Polignac number, because 1100220120021 - 2¹³ = 1100220111829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100220119979 and 1100220120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100220120001) 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 31 ways as a sum of consecutive naturals, for example, 35598451 + ... + 35629343.

It is an arithmetic number, because the mean of its divisors is an integer number (50475544020).

Almost surely, 2^{1100220120021} is an apocalyptic number.

1100220120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100220120021 is a deficient number, since it is larger than the sum of its proper divisors (514997288619).

1100220120021 is a wasteful number, since it uses less digits than its factorization.

1100220120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40917.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100220120021 its reverse (1200210220011), we get a palindrome (2300430340032).

The spelling of 1100220120021 in words is "one trillion, one hundred billion, two hundred twenty million, one hundred twenty thousand, twenty-one".