20322421505252 has 6 divisors (see below), whose sum is σ = 35564237634198. Its totient is φ = 10161210752624.

The previous prime is 20322421505233. The next prime is 20322421505311. The reversal of 20322421505252 is 25250512422302.

It can be written as a sum of positive squares in only one way, i.e., 16665859123456 + 3656562381796 = 4082384^2 + 1912214^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540302688153 + ... + 2540302688160.

It is an arithmetic number, because the mean of its divisors is an integer number (5927372939033).

Almost surely, 2^{20322421505252} is an apocalyptic number.

It is an amenable number.

20322421505252 is a deficient number, since it is larger than the sum of its proper divisors (15241816128946).

20322421505252 is a wasteful number, since it uses less digits than its factorization.

20322421505252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080605376317 (or 5080605376315 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 20322421505252 its reverse (25250512422302), we get a palindrome (45572933927554).

The spelling of 20322421505252 in words is "twenty trillion, three hundred twenty-two billion, four hundred twenty-one million, five hundred five thousand, two hundred fifty-two".