20120020120195 has 4 divisors (see below), whose sum is σ = 24144024144240. Its totient is φ = 16096016096152.

The previous prime is 20120020120181. The next prime is 20120020120229. The reversal of 20120020120195 is 59102102002102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120020120195 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, 2012002012015 + ... + 2012002012024.

It is an arithmetic number, because the mean of its divisors is an integer number (6036006036060).

Almost surely, 2^{20120020120195} is an apocalyptic number.

20120020120195 is a deficient number, since it is larger than the sum of its proper divisors (4024004024045).

20120020120195 is an equidigital number, since it uses as much as digits as its factorization.

20120020120195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024004024044.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 20120020120195 its reverse (59102102002102), we get a palindrome (79222122122297).

The spelling of 20120020120195 in words is "twenty trillion, one hundred twenty billion, twenty million, one hundred twenty thousand, one hundred ninety-five".