2213053065621 has 12 divisors (see below), whose sum is σ = 3205536478560. Its totient is φ = 1471259046120.

The previous prime is 2213053065583. The next prime is 2213053065647. The reversal of 2213053065621 is 1265603503122.

2213053065621 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 0 + 530 + 65 + 62 + 1 = 666.

It is not a de Polignac number, because 2213053065621 - 2⁶ = 2213053065557 is a prime.

It is a super-4 number, since 4×2213053065621⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213053055621) 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 11 ways as a sum of consecutive naturals, for example, 342468615 + ... + 342475076.

It is an arithmetic number, because the mean of its divisors is an integer number (267128039880).

Almost surely, 2^{2213053065621} is an apocalyptic number.

It is an amenable number.

2213053065621 is a deficient number, since it is larger than the sum of its proper divisors (992483412939).

2213053065621 is a wasteful number, since it uses less digits than its factorization.

2213053065621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684944056 (or 684944053 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 2213053065621 its reverse (1265603503122), we get a palindrome (3478656568743).

The spelling of 2213053065621 in words is "two trillion, two hundred thirteen billion, fifty-three million, sixty-five thousand, six hundred twenty-one".