12012120001 has 16 divisors (see below), whose sum is σ = 14367585024. Its totient is φ = 9819177984.

The previous prime is 12012119989. The next prime is 12012120013. The reversal of 12012120001 is 10002121021.

It is an interprime number because it is at equal distance from previous prime (12012119989) and next prime (12012120013).

It is not a de Polignac number, because 12012120001 - 2⁹ = 12012119489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012120001.

It is not an unprimeable number, because it can be changed into a prime (12012120091) 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, 56440 + ... + 164953.

It is an arithmetic number, because the mean of its divisors is an integer number (897974064).

Almost surely, 2^12012120001 is an apocalyptic number.

It is an amenable number.

12012120001 is a deficient number, since it is larger than the sum of its proper divisors (2355465023).

12012120001 is a wasteful number, since it uses less digits than its factorization.

12012120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221760.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12012120001 its reverse (10002121021), we get a palindrome (22014241022).

The spelling of 12012120001 in words is "twelve billion, twelve million, one hundred twenty thousand, one".