1212213121201 has 8 divisors (see below), whose sum is σ = 1251329534208. Its totient is φ = 1173097506000.

The previous prime is 1212213121183. The next prime is 1212213121219. The reversal of 1212213121201 is 1021213122121.

It is an interprime number because it is at equal distance from previous prime (1212213121183) and next prime (1212213121219).

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 1212213121201 - 2⁵ = 1212213121169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212213121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5266791 + ... + 5492131.

It is an arithmetic number, because the mean of its divisors is an integer number (156416191776).

Almost surely, 2^{1212213121201} is an apocalyptic number.

It is an amenable number.

1212213121201 is a deficient number, since it is larger than the sum of its proper divisors (39116413007).

1212213121201 is a wasteful number, since it uses less digits than its factorization.

1212213121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398903.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1212213121201 its reverse (1021213122121), we get a palindrome (2233426243322).

The spelling of 1212213121201 in words is "one trillion, two hundred twelve billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred one".