1212001219999 has 8 divisors (see below), whose sum is σ = 1231957417040. Its totient is φ = 1192047840000.

The previous prime is 1212001219951. The next prime is 1212001220009. The reversal of 1212001219999 is 9999121002121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212001219999 - 2¹³ = 1212001211807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001219939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172207 + ... + 1566415.

It is an arithmetic number, because the mean of its divisors is an integer number (153994677130).

Almost surely, 2^{1212001219999} is an apocalyptic number.

1212001219999 is a deficient number, since it is larger than the sum of its proper divisors (19956197041).

1212001219999 is a wasteful number, since it uses less digits than its factorization.

1212001219999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408521.

The product of its (nonzero) digits is 52488, while the sum is 46.

The spelling of 1212001219999 in words is "one trillion, two hundred twelve billion, one million, two hundred nineteen thousand, nine hundred ninety-nine".