1212121102201 has 8 divisors (see below), whose sum is σ = 1285556808384. Its totient is φ = 1140413295120.

The previous prime is 1212121102187. The next prime is 1212121102259. The reversal of 1212121102201 is 1022011212121.

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

It is not a de Polignac number, because 1212121102201 - 2¹¹ = 1212121100153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212121102001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431973331 + ... + 431976136.

It is an arithmetic number, because the mean of its divisors is an integer number (160694601048).

Almost surely, 2^{1212121102201} is an apocalyptic number.

It is an amenable number.

1212121102201 is a deficient number, since it is larger than the sum of its proper divisors (73435706183).

1212121102201 is an equidigital number, since it uses as much as digits as its factorization.

1212121102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863949551.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212121102201 its reverse (1022011212121), we get a palindrome (2234132314322).

It can be divided in two parts, 1212121 and 102201, that multiplied together give a palindrome (123879978321).

The spelling of 1212121102201 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, one hundred two thousand, two hundred one".