12011212301 has 4 divisors (see below), whose sum is σ = 13103140704. Its totient is φ = 10919283900.

The previous prime is 12011212253. The next prime is 12011212303. The reversal of 12011212301 is 10321211021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011212301 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 (12011212303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545964185 + ... + 545964206.

It is an arithmetic number, because the mean of its divisors is an integer number (3275785176).

Almost surely, 2^12011212301 is an apocalyptic number.

12011212301 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011212301 is a deficient number, since it is larger than the sum of its proper divisors (1091928403).

12011212301 is a wasteful number, since it uses less digits than its factorization.

12011212301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091928402.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12011212301 its reverse (10321211021), we get a palindrome (22332423322).

The spelling of 12011212301 in words is "twelve billion, eleven million, two hundred twelve thousand, three hundred one".