20305222203152 has 40 divisors (see below), whose sum is σ = 40009496758080. Its totient is φ = 9980202188160.

The previous prime is 20305222203139. The next prime is 20305222203157. The reversal of 20305222203152 is 25130222250302.

It is not an unprimeable number, because it can be changed into a prime (20305222203157) 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, 29464277 + ... + 30145547.

It is an arithmetic number, because the mean of its divisors is an integer number (1000237418952).

Almost surely, 2^{20305222203152} is an apocalyptic number.

It is an amenable number.

20305222203152 is a deficient number, since it is larger than the sum of its proper divisors (19704274554928).

20305222203152 is a wasteful number, since it uses less digits than its factorization.

20305222203152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712911 (or 712905 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20305222203152 its reverse (25130222250302), we get a palindrome (45435444453454).

The spelling of 20305222203152 in words is "twenty trillion, three hundred five billion, two hundred twenty-two million, two hundred three thousand, one hundred fifty-two".