20122420340011 has 4 divisors (see below), whose sum is σ = 21951731280024. Its totient is φ = 18293109400000.

The previous prime is 20122420339997. The next prime is 20122420340051. The reversal of 20122420340011 is 11004302422102.

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 20122420340011 - 2¹⁹ = 20122419815723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122420340051) 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, 914655469990 + ... + 914655470011.

It is an arithmetic number, because the mean of its divisors is an integer number (5487932820006).

Almost surely, 2^{20122420340011} is an apocalyptic number.

20122420340011 is a deficient number, since it is larger than the sum of its proper divisors (1829310940013).

20122420340011 is a wasteful number, since it uses less digits than its factorization.

20122420340011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829310940012.

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

Adding to 20122420340011 its reverse (11004302422102), we get a palindrome (31126722762113).

The spelling of 20122420340011 in words is "twenty trillion, one hundred twenty-two billion, four hundred twenty million, three hundred forty thousand, eleven".