20012133245 has 8 divisors (see below), whose sum is σ = 25861833816. Its totient is φ = 14778190656.

The previous prime is 20012133223. The next prime is 20012133247. The reversal of 20012133245 is 54233121002.

It can be written as a sum of positive squares in 4 ways, for example, as 1220384356 + 18791748889 = 34934^2 + 137083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012133245 - 2⁸ = 20012132989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012133245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012133247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153939422 + ... + 153939551.

It is an arithmetic number, because the mean of its divisors is an integer number (3232729227).

Almost surely, 2^20012133245 is an apocalyptic number.

It is an amenable number.

20012133245 is a deficient number, since it is larger than the sum of its proper divisors (5849700571).

20012133245 is a wasteful number, since it uses less digits than its factorization.

20012133245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307878991.

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

Adding to 20012133245 its reverse (54233121002), we get a palindrome (74245254247).

The spelling of 20012133245 in words is "twenty billion, twelve million, one hundred thirty-three thousand, two hundred forty-five".