20212811038443 has 16 divisors (see below), whose sum is σ = 27331317972000. Its totient is φ = 13285623394560.

The previous prime is 20212811038429. The next prime is 20212811038447. The reversal of 20212811038443 is 34483011821202.

It is a happy number.

It is not a de Polignac number, because 20212811038443 - 2⁸ = 20212811038187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212811038447) 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, 108364428 + ... + 108550793.

It is an arithmetic number, because the mean of its divisors is an integer number (1708207373250).

Almost surely, 2^{20212811038443} is an apocalyptic number.

20212811038443 is a deficient number, since it is larger than the sum of its proper divisors (7118506933557).

20212811038443 is a wasteful number, since it uses less digits than its factorization.

20212811038443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216915662.

The product of its (nonzero) digits is 73728, while the sum is 39.

Adding to 20212811038443 its reverse (34483011821202), we get a palindrome (54695822859645).

The spelling of 20212811038443 in words is "twenty trillion, two hundred twelve billion, eight hundred eleven million, thirty-eight thousand, four hundred forty-three".