12201212001 has 32 divisors (see below), whose sum is σ = 18899941248. Its totient is φ = 6919408640.

The previous prime is 12201211999. The next prime is 12201212003. The reversal of 12201212001 is 10021210221.

It is an interprime number because it is at equal distance from previous prime (12201211999) and next prime (12201212003).

It is a cyclic number.

It is not a de Polignac number, because 12201212001 - 2¹ = 12201211999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12201212003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34195 + ... + 159911.

It is an arithmetic number, because the mean of its divisors is an integer number (590623164).

Almost surely, 2^12201212001 is an apocalyptic number.

12201212001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201212001 is a deficient number, since it is larger than the sum of its proper divisors (6698729247).

12201212001 is a wasteful number, since it uses less digits than its factorization.

12201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125921.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12201212001 its reverse (10021210221), we get a palindrome (22222422222).

The spelling of 12201212001 in words is "twelve billion, two hundred one million, two hundred twelve thousand, one".