20122435013 has 4 divisors (see below), whose sum is σ = 21181510560. Its totient is φ = 19063359468.

The previous prime is 20122435007. The next prime is 20122435019. The reversal of 20122435013 is 31053422102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20122435007) and next prime (20122435019).

It is a cyclic number.

It is not a de Polignac number, because 20122435013 - 2¹² = 20122430917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20122435013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122435019) 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, 529537745 + ... + 529537782.

It is an arithmetic number, because the mean of its divisors is an integer number (5295377640).

Almost surely, 2^20122435013 is an apocalyptic number.

It is an amenable number.

20122435013 is a deficient number, since it is larger than the sum of its proper divisors (1059075547).

20122435013 is a wasteful number, since it uses less digits than its factorization.

20122435013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059075546.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20122435013 its reverse (31053422102), we get a palindrome (51175857115).

The spelling of 20122435013 in words is "twenty billion, one hundred twenty-two million, four hundred thirty-five thousand, thirteen".