20142220867 has 4 divisors (see below), whose sum is σ = 20262833136. Its totient is φ = 20021608600.

The previous prime is 20142220849. The next prime is 20142220873. The reversal of 20142220867 is 76802224102.

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 20142220867 - 2¹¹ = 20142218819 is a prime.

It is a super-2 number, since 2×20142220867² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20142220837) 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, 60305884 + ... + 60306217.

It is an arithmetic number, because the mean of its divisors is an integer number (5065708284).

Almost surely, 2^20142220867 is an apocalyptic number.

20142220867 is a deficient number, since it is larger than the sum of its proper divisors (120612269).

20142220867 is a wasteful number, since it uses less digits than its factorization.

20142220867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120612268.

The product of its (nonzero) digits is 21504, while the sum is 34.

Adding to 20142220867 its reverse (76802224102), we get a palindrome (96944444969).

The spelling of 20142220867 in words is "twenty billion, one hundred forty-two million, two hundred twenty thousand, eight hundred sixty-seven".