20201211021195 has 96 divisors (see below), whose sum is σ = 36527980976640. Its totient is φ = 10592191411200.

The previous prime is 20201211021191. The next prime is 20201211021263. The reversal of 20201211021195 is 59112011210202.

It is not a de Polignac number, because 20201211021195 - 2² = 20201211021191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20201211021191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 191749804 + ... + 191855126.

It is an arithmetic number, because the mean of its divisors is an integer number (380499801840).

Almost surely, 2^{20201211021195} is an apocalyptic number.

20201211021195 is a deficient number, since it is larger than the sum of its proper divisors (16326769955445).

20201211021195 is a wasteful number, since it uses less digits than its factorization.

20201211021195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105682 (or 105579 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

Adding to 20201211021195 its reverse (59112011210202), we get a palindrome (79313222231397).

The spelling of 20201211021195 in words is "twenty trillion, two hundred one billion, two hundred eleven million, twenty-one thousand, one hundred ninety-five".