20403423043122 has 16 divisors (see below), whose sum is σ = 46636395527232. Its totient is φ = 5829549440880.

The previous prime is 20403423043121. The next prime is 20403423043139. The reversal of 20403423043122 is 22134032430402.

It is a self number, because there is not a number n which added to its sum of digits gives 20403423043122.

It is not an unprimeable number, because it can be changed into a prime (20403423043121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242897893329 + ... + 242897893412.

It is an arithmetic number, because the mean of its divisors is an integer number (2914774720452).

Almost surely, 2^{20403423043122} is an apocalyptic number.

20403423043122 is an abundant number, since it is smaller than the sum of its proper divisors (26232972484110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20403423043122 is a wasteful number, since it uses less digits than its factorization.

20403423043122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485795786753.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 20403423043122 its reverse (22134032430402), we get a palindrome (42537455473524).

The spelling of 20403423043122 in words is "twenty trillion, four hundred three billion, four hundred twenty-three million, forty-three thousand, one hundred twenty-two".