20122421143 has 16 divisors (see below), whose sum is σ = 23115456000. Its totient is φ = 17324038080.

The previous prime is 20122421131. The next prime is 20122421153. The reversal of 20122421143 is 34112422102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122421143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122421153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615883 + ... + 647731.

It is an arithmetic number, because the mean of its divisors is an integer number (1444716000).

Almost surely, 2^20122421143 is an apocalyptic number.

20122421143 is a deficient number, since it is larger than the sum of its proper divisors (2993034857).

20122421143 is a wasteful number, since it uses less digits than its factorization.

20122421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34902.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20122421143 its reverse (34112422102), we get a palindrome (54234843245).

The spelling of 20122421143 in words is "twenty billion, one hundred twenty-two million, four hundred twenty-one thousand, one hundred forty-three".