20450122420132 has 24 divisors (see below), whose sum is σ = 35996308563096. Its totient is φ = 10165531066368.

The previous prime is 20450122420129. The next prime is 20450122420163. The reversal of 20450122420132 is 23102422105402.

It can be written as a sum of positive squares in 4 ways, for example, as 1648671408036 + 18801451012096 = 1284006^2 + 4336064^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20450122420132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7329673 + ... + 9727504.

It is an arithmetic number, because the mean of its divisors is an integer number (1499846190129).

Almost surely, 2^{20450122420132} is an apocalyptic number.

It is an amenable number.

20450122420132 is a deficient number, since it is larger than the sum of its proper divisors (15546186142964).

20450122420132 is a wasteful number, since it uses less digits than its factorization.

20450122420132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17058927 (or 17058925 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20450122420132 its reverse (23102422105402), we get a palindrome (43552544525534).

The spelling of 20450122420132 in words is "twenty trillion, four hundred fifty billion, one hundred twenty-two million, four hundred twenty thousand, one hundred thirty-two".