12121152271 has 8 divisors (see below), whose sum is σ = 12145637664. Its totient is φ = 12096685920.

The previous prime is 12121152259. The next prime is 12121152293. The reversal of 12121152271 is 17225112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121152271 - 2⁷ = 12121152143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121152671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236561 + ... + 2241973.

It is an arithmetic number, because the mean of its divisors is an integer number (1518204708).

Almost surely, 2^12121152271 is an apocalyptic number.

12121152271 is a deficient number, since it is larger than the sum of its proper divisors (24485393).

12121152271 is an equidigital number, since it uses as much as digits as its factorization.

12121152271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521.

The product of its digits is 560, while the sum is 25.

Adding to 12121152271 its reverse (17225112121), we get a palindrome (29346264392).

The spelling of 12121152271 in words is "twelve billion, one hundred twenty-one million, one hundred fifty-two thousand, two hundred seventy-one".