2216241020551 has 4 divisors (see below), whose sum is σ = 2217065824512. Its totient is φ = 2215416216592.

The previous prime is 2216241020527. The next prime is 2216241020561. The reversal of 2216241020551 is 1550201426122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2216241020551 - 2¹¹ = 2216241018503 is a prime.

It is a super-2 number, since 2×2216241020551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216241020561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412397950 + ... + 412403323.

It is an arithmetic number, because the mean of its divisors is an integer number (554266456128).

Almost surely, 2^{2216241020551} is an apocalyptic number.

2216241020551 is a deficient number, since it is larger than the sum of its proper divisors (824803961).

2216241020551 is an equidigital number, since it uses as much as digits as its factorization.

2216241020551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824803960.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 2216241020551 its reverse (1550201426122), we get a palindrome (3766442446673).

The spelling of 2216241020551 in words is "two trillion, two hundred sixteen billion, two hundred forty-one million, twenty thousand, five hundred fifty-one".