20021341443213 has 16 divisors (see below), whose sum is σ = 29127397856256. Its totient is φ = 12131876885040.

The previous prime is 20021341443203. The next prime is 20021341443253. The reversal of 20021341443213 is 31234414312002.

It is not a de Polignac number, because 20021341443213 - 2⁶ = 20021341443149 is a prime.

It is a super-2 number, since 2×20021341443213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021341443203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56556981 + ... + 56909882.

It is an arithmetic number, because the mean of its divisors is an integer number (1820462366016).

Almost surely, 2^{20021341443213} is an apocalyptic number.

It is an amenable number.

20021341443213 is a deficient number, since it is larger than the sum of its proper divisors (9106056413043).

20021341443213 is a wasteful number, since it uses less digits than its factorization.

20021341443213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113472224.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20021341443213 its reverse (31234414312002), we get a palindrome (51255755755215).

The spelling of 20021341443213 in words is "twenty trillion, twenty-one billion, three hundred forty-one million, four hundred forty-three thousand, two hundred thirteen".