2121622441 has 8 divisors (see below), whose sum is σ = 2280804480. Its totient is φ = 1967192208.

The previous prime is 2121622411. The next prime is 2121622519. The reversal of 2121622441 is 1442261212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121622441 - 2⁵ = 2121622409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121622411) 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 7 ways as a sum of consecutive naturals, for example, 1187026 + ... + 1188811.

It is an arithmetic number, because the mean of its divisors is an integer number (285100560).

Almost surely, 2^2121622441 is an apocalyptic number.

It is an amenable number.

2121622441 is a deficient number, since it is larger than the sum of its proper divisors (159182039).

2121622441 is a wasteful number, since it uses less digits than its factorization.

2121622441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375903.

The product of its digits is 1536, while the sum is 25.

The square root of 2121622441 is about 46061.0729466868. The cubic root of 2121622441 is about 1284.9592846946.

Adding to 2121622441 its reverse (1442261212), we get a palindrome (3563883653).

The spelling of 2121622441 in words is "two billion, one hundred twenty-one million, six hundred twenty-two thousand, four hundred forty-one".