121212002201 has 4 divisors (see below), whose sum is σ = 122573934900. Its totient is φ = 119850069504.

The previous prime is 121212002189. The next prime is 121212002267. The reversal of 121212002201 is 102200212121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31497375625 + 89714626576 = 177475^2 + 299524^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212002201 - 2¹⁰ = 121212001177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212052201) 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, 680966216 + ... + 680966393.

It is an arithmetic number, because the mean of its divisors is an integer number (30643483725).

Almost surely, 2^121212002201 is an apocalyptic number.

It is an amenable number.

121212002201 is a deficient number, since it is larger than the sum of its proper divisors (1361932699).

121212002201 is an equidigital number, since it uses as much as digits as its factorization.

121212002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361932698.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121212002201 its reverse (102200212121), we get a palindrome (223412214322).

The spelling of 121212002201 in words is "one hundred twenty-one billion, two hundred twelve million, two thousand, two hundred one".