12121111095 has 16 divisors (see below), whose sum is σ = 20534588640. Its totient is φ = 6084322304.

The previous prime is 12121111091. The next prime is 12121111097. The reversal of 12121111095 is 59011112121.

It is not a de Polignac number, because 12121111095 - 2² = 12121111091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121111091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23766630 + ... + 23767139.

It is an arithmetic number, because the mean of its divisors is an integer number (1283411790).

Almost surely, 2^12121111095 is an apocalyptic number.

12121111095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12121111095 is a deficient number, since it is larger than the sum of its proper divisors (8413477545).

12121111095 is a wasteful number, since it uses less digits than its factorization.

12121111095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47533794.

The product of its (nonzero) digits is 180, while the sum is 24.

The spelling of 12121111095 in words is "twelve billion, one hundred twenty-one million, one hundred eleven thousand, ninety-five".