20021411242 has 16 divisors (see below), whose sum is σ = 34430699520. Its totient is φ = 8553534768.

The previous prime is 20021411237. The next prime is 20021411261. The reversal of 20021411242 is 24211412002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251242 + ... + 2260117.

It is an arithmetic number, because the mean of its divisors is an integer number (2151918720).

Almost surely, 2^20021411242 is an apocalyptic number.

20021411242 is a deficient number, since it is larger than the sum of its proper divisors (14409288278).

20021411242 is a wasteful number, since it uses less digits than its factorization.

20021411242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511685.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20021411242 its reverse (24211412002), we get a palindrome (44232823244).

The spelling of 20021411242 in words is "twenty billion, twenty-one million, four hundred eleven thousand, two hundred forty-two".