2221033030121 has 12 divisors (see below), whose sum is σ = 2284598403612. Its totient is φ = 2159192118528.

The previous prime is 2221033030093. The next prime is 2221033030147. The reversal of 2221033030121 is 1210303301222.

It can be written as a sum of positive squares in 6 ways, for example, as 15775360000 + 2205257670121 = 125600^2 + 1485011^2 .

It is not a de Polignac number, because 2221033030121 - 2¹⁴ = 2221033013737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221033030093 and 2221033030102.

It is not an unprimeable number, because it can be changed into a prime (2221033036121) 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 11 ways as a sum of consecutive naturals, for example, 953261 + ... + 2313173.

It is an arithmetic number, because the mean of its divisors is an integer number (190383200301).

Almost surely, 2^{2221033030121} is an apocalyptic number.

It is an amenable number.

2221033030121 is a deficient number, since it is larger than the sum of its proper divisors (63565373491).

2221033030121 is a wasteful number, since it uses less digits than its factorization.

2221033030121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361180 (or 1361143 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2221033030121 its reverse (1210303301222), we get a palindrome (3431336331343).

The spelling of 2221033030121 in words is "two trillion, two hundred twenty-one billion, thirty-three million, thirty thousand, one hundred twenty-one".