20122111195 has 4 divisors (see below), whose sum is σ = 24146533440. Its totient is φ = 16097688952.

The previous prime is 20122111169. The next prime is 20122111211. The reversal of 20122111195 is 59111122102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20122111195 - 2¹⁹ = 20121586907 is a prime.

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, 2012211115 + ... + 2012211124.

It is an arithmetic number, because the mean of its divisors is an integer number (6036633360).

Almost surely, 2^20122111195 is an apocalyptic number.

20122111195 is a deficient number, since it is larger than the sum of its proper divisors (4024422245).

20122111195 is an equidigital number, since it uses as much as digits as its factorization.

20122111195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024422244.

The product of its (nonzero) digits is 360, while the sum is 25.

Adding to 20122111195 its reverse (59111122102), we get a palindrome (79233233297).

The spelling of 20122111195 in words is "twenty billion, one hundred twenty-two million, one hundred eleven thousand, one hundred ninety-five".