20211001242 has 32 divisors (see below), whose sum is σ = 44180411904. Its totient is φ = 6136166400.

The previous prime is 20211001201. The next prime is 20211001243. The reversal of 20211001242 is 24210011202.

It is not an unprimeable number, because it can be changed into a prime (20211001243) 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 15 ways as a sum of consecutive naturals, for example, 3192759 + ... + 3199082.

It is an arithmetic number, because the mean of its divisors is an integer number (1380637872).

Almost surely, 2^20211001242 is an apocalyptic number.

20211001242 is an abundant number, since it is smaller than the sum of its proper divisors (23969410662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211001242 is a wasteful number, since it uses less digits than its factorization.

20211001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391894.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20211001242 its reverse (24210011202), we get a palindrome (44421012444).

The spelling of 20211001242 in words is "twenty billion, two hundred eleven million, one thousand, two hundred forty-two".