12121231195 has 16 divisors (see below), whose sum is σ = 14611322880. Its totient is φ = 9653190624.

The previous prime is 12121231153. The next prime is 12121231207. The reversal of 12121231195 is 59113212121.

It is a cyclic number.

It is not a de Polignac number, because 12121231195 - 2²¹ = 12119134043 is a prime.

It is a super-2 number, since 2×12121231195² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010322 + ... + 1022248.

It is an arithmetic number, because the mean of its divisors is an integer number (913207680).

Almost surely, 2^12121231195 is an apocalyptic number.

12121231195 is a deficient number, since it is larger than the sum of its proper divisors (2490091685).

12121231195 is a wasteful number, since it uses less digits than its factorization.

12121231195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834.

The product of its digits is 1080, while the sum is 28.

The spelling of 12121231195 in words is "twelve billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred ninety-five".