121212122001001 has 4 divisors (see below), whose sum is σ = 121226869803600. Its totient is φ = 121197374198404.

The previous prime is 121212122000939. The next prime is 121212122001067. The reversal of 121212122001001 is 100100221212121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121212122001001 - 2¹⁷ = 121212121869929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212122061001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7373888971 + ... + 7373905408.

It is an arithmetic number, because the mean of its divisors is an integer number (30306717450900).

Almost surely, 2^{121212122001001} is an apocalyptic number.

It is an amenable number.

121212122001001 is a deficient number, since it is larger than the sum of its proper divisors (14747802599).

121212122001001 is an equidigital number, since it uses as much as digits as its factorization.

121212122001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14747802598.

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

Adding to 121212122001001 its reverse (100100221212121), we get a palindrome (221312343213122).

The spelling of 121212122001001 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-two million, one thousand, one".