2212621553 has 8 divisors (see below), whose sum is σ = 2371003488. Its totient is φ = 2057376064.

The previous prime is 2212621549. The next prime is 2212621561. The reversal of 2212621553 is 3551262122.

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

It is a cyclic number.

It is not a de Polignac number, because 2212621553 - 2² = 2212621549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2212621583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782651 + ... + 785472.

It is an arithmetic number, because the mean of its divisors is an integer number (296375436).

Almost surely, 2^2212621553 is an apocalyptic number.

It is an amenable number.

2212621553 is a deficient number, since it is larger than the sum of its proper divisors (158381935).

2212621553 is a wasteful number, since it uses less digits than its factorization.

2212621553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568223.

The product of its digits is 7200, while the sum is 29.

The square root of 2212621553 is about 47038.5113816328. The cubic root of 2212621553 is about 1303.0739000778.

Adding to 2212621553 its reverse (3551262122), we get a palindrome (5763883675).

The spelling of 2212621553 in words is "two billion, two hundred twelve million, six hundred twenty-one thousand, five hundred fifty-three".