1120210220021 has 4 divisors (see below), whose sum is σ = 1120784983500. Its totient is φ = 1119635456544.

The previous prime is 1120210219981. The next prime is 1120210220023. The reversal of 1120210220021 is 1200220120211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1011251472100 + 108958747921 = 1005610^2 + 330089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120210220021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1120210219978 and 1120210220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120210220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287378816 + ... + 287382713.

It is an arithmetic number, because the mean of its divisors is an integer number (280196245875).

Almost surely, 2^{1120210220021} is an apocalyptic number.

It is an amenable number.

1120210220021 is a deficient number, since it is larger than the sum of its proper divisors (574763479).

1120210220021 is an equidigital number, since it uses as much as digits as its factorization.

1120210220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574763478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1120210220021 its reverse (1200220120211), we get a palindrome (2320430340232).

The spelling of 1120210220021 in words is "one trillion, one hundred twenty billion, two hundred ten million, two hundred twenty thousand, twenty-one".