20535122002 has 8 divisors (see below), whose sum is σ = 30803636556. Its totient is φ = 10267243152.

The previous prime is 20535121979. The next prime is 20535122017. The reversal of 20535122002 is 20022153502.

It can be written as a sum of positive squares in 2 ways, for example, as 20033854681 + 501267321 = 141541^2 + 22389^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67693 + ... + 213664.

Almost surely, 2^20535122002 is an apocalyptic number.

20535122002 is a deficient number, since it is larger than the sum of its proper divisors (10268514554).

20535122002 is a wasteful number, since it uses less digits than its factorization.

20535122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317852.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20535122002 its reverse (20022153502), we get a palindrome (40557275504).

The spelling of 20535122002 in words is "twenty billion, five hundred thirty-five million, one hundred twenty-two thousand, two".