20502133201 has 4 divisors (see below), whose sum is σ = 22365963504. Its totient is φ = 18638302900.

The previous prime is 20502133193. The next prime is 20502133207. The reversal of 20502133201 is 10233120502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20502133201 - 2³ = 20502133193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20502133207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931915135 + ... + 931915156.

It is an arithmetic number, because the mean of its divisors is an integer number (5591490876).

Almost surely, 2^20502133201 is an apocalyptic number.

It is an amenable number.

20502133201 is a deficient number, since it is larger than the sum of its proper divisors (1863830303).

20502133201 is a wasteful number, since it uses less digits than its factorization.

20502133201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863830302.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20502133201 its reverse (10233120502), we get a palindrome (30735253703).

The spelling of 20502133201 in words is "twenty billion, five hundred two million, one hundred thirty-three thousand, two hundred one".