20021411441243 has 8 divisors (see below), whose sum is σ = 21716193759120. Its totient is φ = 18384079371520.

The previous prime is 20021411441189. The next prime is 20021411441249. The reversal of 20021411441243 is 34214411412002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021411441243 is a prime.

It is a super-2 number, since 2×20021411441243² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021411441249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14362561313 + ... + 14362562706.

It is an arithmetic number, because the mean of its divisors is an integer number (2714524219890).

Almost surely, 2^{20021411441243} is an apocalyptic number.

20021411441243 is a deficient number, since it is larger than the sum of its proper divisors (1694782317877).

20021411441243 is a wasteful number, since it uses less digits than its factorization.

20021411441243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28725124077.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 20021411441243 its reverse (34214411412002), we get a palindrome (54235822853245).

The spelling of 20021411441243 in words is "twenty trillion, twenty-one billion, four hundred eleven million, four hundred forty-one thousand, two hundred forty-three".