2216062201621 has 2 divisors, whose sum is σ = 2216062201622. Its totient is φ = 2216062201620.

The previous prime is 2216062201597. The next prime is 2216062201631. The reversal of 2216062201621 is 1261022606122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2183555914596 + 32506287025 = 1477686^2 + 180295^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216062201621 - 2³⁵ = 2181702463253 is a prime.

It is a super-4 number, since 4×2216062201621⁴ (a number of 50 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216062201631) by changing a digit.

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 as a sum of consecutive naturals, namely, 1108031100810 + 1108031100811.

It is an arithmetic number, because the mean of its divisors is an integer number (1108031100811).

Almost surely, 2^{2216062201621} is an apocalyptic number.

It is an amenable number.

2216062201621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216062201621 is an equidigital number, since it uses as much as digits as its factorization.

2216062201621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 2216062201621 its reverse (1261022606122), we get a palindrome (3477084807743).

The spelling of 2216062201621 in words is "two trillion, two hundred sixteen billion, sixty-two million, two hundred one thousand, six hundred twenty-one".