20021341443215 has 16 divisors (see below), whose sum is σ = 27458078372928. Its totient is φ = 13728800507136.

The previous prime is 20021341443203. The next prime is 20021341443253. The reversal of 20021341443215 is 51234414312002.

It is a cyclic number.

It is not a de Polignac number, because 20021341443215 - 2⁸ = 20021341442959 is a prime.

It is a super-2 number, since 2×20021341443215² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1696829 + ... + 6551481.

It is an arithmetic number, because the mean of its divisors is an integer number (1716129898308).

Almost surely, 2^{20021341443215} is an apocalyptic number.

20021341443215 is a deficient number, since it is larger than the sum of its proper divisors (7436736929713).

20021341443215 is a wasteful number, since it uses less digits than its factorization.

20021341443215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972498.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 20021341443215 its reverse (51234414312002), we get a palindrome (71255755755217).

The spelling of 20021341443215 in words is "twenty trillion, twenty-one billion, three hundred forty-one million, four hundred forty-three thousand, two hundred fifteen".