20231021195 has 32 divisors (see below), whose sum is σ = 30971635200. Its totient is φ = 12318243840.

The previous prime is 20231021189. The next prime is 20231021219. The reversal of 20231021195 is 59112013202.

It is a happy number.

It is not a de Polignac number, because 20231021195 - 2⁴ = 20231021179 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 594470 + ... + 627579.

It is an arithmetic number, because the mean of its divisors is an integer number (967863600).

Almost surely, 2^20231021195 is an apocalyptic number.

20231021195 is a deficient number, since it is larger than the sum of its proper divisors (10740614005).

20231021195 is a wasteful number, since it uses less digits than its factorization.

20231021195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222115.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 20231021195 its reverse (59112013202), we get a palindrome (79343034397).

The spelling of 20231021195 in words is "twenty billion, two hundred thirty-one million, twenty-one thousand, one hundred ninety-five".