20231021196 has 36 divisors (see below), whose sum is σ = 51180980032. Its totient is φ = 6738207264.

The previous prime is 20231021189. The next prime is 20231021219. The reversal of 20231021196 is 69112013202.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182620 + ... + 271683.

Almost surely, 2^20231021196 is an apocalyptic number.

It is an amenable number.

20231021196 is an abundant number, since it is smaller than the sum of its proper divisors (30949958836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231021196 is a wasteful number, since it uses less digits than its factorization.

20231021196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455550 (or 455545 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Adding to 20231021196 its reverse (69112013202), we get a palindrome (89343034398).

The spelling of 20231021196 in words is "twenty billion, two hundred thirty-one million, twenty-one thousand, one hundred ninety-six".