20211213043 has 8 divisors (see below), whose sum is σ = 23251500800. Its totient is φ = 17209168200.

The previous prime is 20211213017. The next prime is 20211213089. The reversal of 20211213043 is 34031211202.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20211213043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211213043.

It is not an unprimeable number, because it can be changed into a prime (20211213013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9559593 + ... + 9561706.

It is an arithmetic number, because the mean of its divisors is an integer number (2906437600).

Almost surely, 2^20211213043 is an apocalyptic number.

20211213043 is a deficient number, since it is larger than the sum of its proper divisors (3040287757).

20211213043 is a wasteful number, since it uses less digits than its factorization.

20211213043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19121457.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20211213043 its reverse (34031211202), we get a palindrome (54242424245).

The spelling of 20211213043 in words is "twenty billion, two hundred eleven million, two hundred thirteen thousand, forty-three".