12201212101 has 8 divisors (see below), whose sum is σ = 13140648920. Its totient is φ = 11261901312.

The previous prime is 12201212087. The next prime is 12201212113. The reversal of 12201212101 is 10121210221.

It can be written as a sum of positive squares in 4 ways, for example, as 1478402500 + 10722809601 = 38450^2 + 103551^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201212101 is a prime.

It is a super-3 number, since 3×12201212101³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201212701) 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, 294781 + ... + 333613.

It is an arithmetic number, because the mean of its divisors is an integer number (1642581115).

Almost surely, 2^12201212101 is an apocalyptic number.

It is an amenable number.

12201212101 is a deficient number, since it is larger than the sum of its proper divisors (939436819).

12201212101 is a wasteful number, since it uses less digits than its factorization.

12201212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63015.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12201212101 its reverse (10121210221), we get a palindrome (22322422322).

The spelling of 12201212101 in words is "twelve billion, two hundred one million, two hundred twelve thousand, one hundred one".