2121022433 has 4 divisors (see below), whose sum is σ = 2121123780. Its totient is φ = 2120921088.

The previous prime is 2121022369. The next prime is 2121022471. The reversal of 2121022433 is 3342201212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 82319329 + 2038703104 = 9073^2 + 45152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121022433 - 2⁶ = 2121022369 is a prime.

It is a super-2 number, since 2×2121022433² = 8997472322578478978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121022133) 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 3 ways as a sum of consecutive naturals, for example, 6368 + ... + 65441.

It is an arithmetic number, because the mean of its divisors is an integer number (530280945).

Almost surely, 2^2121022433 is an apocalyptic number.

It is an amenable number.

2121022433 is a deficient number, since it is larger than the sum of its proper divisors (101347).

2121022433 is an equidigital number, since it uses as much as digits as its factorization.

2121022433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101346.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2121022433 is about 46054.5593074128. The cubic root of 2121022433 is about 1284.8381417858.

Adding to 2121022433 its reverse (3342201212), we get a palindrome (5463223645).

The spelling of 2121022433 in words is "two billion, one hundred twenty-one million, twenty-two thousand, four hundred thirty-three".