1122020200021 has 12 divisors (see below), whose sum is σ = 1305452217132. Its totient is φ = 961551040128.

The previous prime is 1122020199941. The next prime is 1122020200033. The reversal of 1122020200021 is 1200020202211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1120358740900 + 1661459121 = 1058470^2 + 40761^2 .

It is not a de Polignac number, because 1122020200021 - 2²⁵ = 1121986645589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122020199974 and 1122020200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122020200061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1885540 + ... + 2408173.

It is an arithmetic number, because the mean of its divisors is an integer number (108787684761).

Almost surely, 2^{1122020200021} is an apocalyptic number.

It is an amenable number.

1122020200021 is a deficient number, since it is larger than the sum of its proper divisors (183432017111).

1122020200021 is an equidigital number, since it uses as much as digits as its factorization.

1122020200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299060 (or 4299053 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1122020200021 its reverse (1200020202211), we get a palindrome (2322040402232).

The spelling of 1122020200021 in words is "one trillion, one hundred twenty-two billion, twenty million, two hundred thousand, twenty-one".