2121222023330 has 24 divisors (see below), whose sum is σ = 3881819268756. Its totient is φ = 834579142080.

The previous prime is 2121222023303. The next prime is 2121222023399. The reversal of 2121222023330 is 333202221212.

It can be written as a sum of positive squares in 6 ways, for example, as 299658802921 + 1821563220409 = 547411^2 + 1349653^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121222023296 and 2121222023305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28466177 + ... + 28540596.

Almost surely, 2^{2121222023330} is an apocalyptic number.

2121222023330 is a deficient number, since it is larger than the sum of its proper divisors (1760597245426).

2121222023330 is an equidigital number, since it uses as much as digits as its factorization.

2121222023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57006902 (or 57006841 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 2121222023330 its reverse (333202221212), we get a palindrome (2454424244542).

The spelling of 2121222023330 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty-three thousand, three hundred thirty".