20122343304421 has 16 divisors (see below), whose sum is σ = 21008367270000. Its totient is φ = 19249149298176.

The previous prime is 20122343304331. The next prime is 20122343304457. The reversal of 20122343304421 is 12440334322102.

It can be written as a sum of positive squares in 8 ways, for example, as 1258522741921 + 18863820562500 = 1121839^2 + 4343250^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122343304421 - 2¹³ = 20122343296229 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 (20122343304491) 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, 59476225 + ... + 59813593.

It is an arithmetic number, because the mean of its divisors is an integer number (1313022954375).

Almost surely, 2^{20122343304421} is an apocalyptic number.

It is an amenable number.

20122343304421 is a deficient number, since it is larger than the sum of its proper divisors (886023965579).

20122343304421 is a wasteful number, since it uses less digits than its factorization.

20122343304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356376.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20122343304421 its reverse (12440334322102), we get a palindrome (32562677626523).

The spelling of 20122343304421 in words is "twenty trillion, one hundred twenty-two billion, three hundred forty-three million, three hundred four thousand, four hundred twenty-one".