20211250043 has 4 divisors (see below), whose sum is σ = 20212606008. Its totient is φ = 20209894080.

The previous prime is 20211250039. The next prime is 20211250093. The reversal of 20211250043 is 34005211202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20211250043 - 2² = 20211250039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211249997 and 20211250024.

It is not an unprimeable number, because it can be changed into a prime (20211250013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655373 + ... + 685518.

It is an arithmetic number, because the mean of its divisors is an integer number (5053151502).

Almost surely, 2^20211250043 is an apocalyptic number.

20211250043 is a deficient number, since it is larger than the sum of its proper divisors (1355965).

20211250043 is a wasteful number, since it uses less digits than its factorization.

20211250043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355964.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20211250043 its reverse (34005211202), we get a palindrome (54216461245).

The spelling of 20211250043 in words is "twenty billion, two hundred eleven million, two hundred fifty thousand, forty-three".