1120200100021 has 4 divisors (see below), whose sum is σ = 1124558855532. Its totient is φ = 1115841344512.

The previous prime is 1120200099971. The next prime is 1120200100037. The reversal of 1120200100021 is 1200010020211.

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 802905602500 + 317294497521 = 896050^2 + 563289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120200100021 - 2²³ = 1120191711413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120200099980 and 1120200100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120200100091) 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, 2179377370 + ... + 2179377883.

It is an arithmetic number, because the mean of its divisors is an integer number (281139713883).

Almost surely, 2^{1120200100021} is an apocalyptic number.

It is an amenable number.

1120200100021 is a deficient number, since it is larger than the sum of its proper divisors (4358755511).

1120200100021 is an equidigital number, since it uses as much as digits as its factorization.

1120200100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358755510.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1120200100021 its reverse (1200010020211), we get a palindrome (2320210120232).

It can be divided in two parts, 1120200 and 100021, that added together give a palindrome (1220221).

The spelling of 1120200100021 in words is "one trillion, one hundred twenty billion, two hundred million, one hundred thousand, twenty-one".