1002200021121 has 16 divisors (see below), whose sum is σ = 1440885018944. Its totient is φ = 615954798144.

The previous prime is 1002200021117. The next prime is 1002200021129. The reversal of 1002200021121 is 1211200022001.

1002200021121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1002200021121 - 2² = 1002200021117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002200021097 and 1002200021106.

It is not an unprimeable number, because it can be changed into a prime (1002200021129) 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, 16295506 + ... + 16356891.

It is an arithmetic number, because the mean of its divisors is an integer number (90055313684).

Almost surely, 2^{1002200021121} is an apocalyptic number.

It is an amenable number.

1002200021121 is a deficient number, since it is larger than the sum of its proper divisors (438684997823).

1002200021121 is a wasteful number, since it uses less digits than its factorization.

1002200021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32653200.

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

Adding to 1002200021121 its reverse (1211200022001), we get a palindrome (2213400043122).

The spelling of 1002200021121 in words is "one trillion, two billion, two hundred million, twenty-one thousand, one hundred twenty-one".