1212143202021 has 8 divisors (see below), whose sum is σ = 1671921658080. Its totient is φ = 780230106992.

The previous prime is 1212143202019. The next prime is 1212143202031. The reversal of 1212143202021 is 1202023412121.

It is a happy number.

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

It is not a de Polignac number, because 1212143202021 - 2¹ = 1212143202019 is a prime.

It is a super-2 number, since 2×1212143202021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212143202031) 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, 6966340155 + ... + 6966340328.

It is an arithmetic number, because the mean of its divisors is an integer number (208990207260).

Almost surely, 2^{1212143202021} is an apocalyptic number.

It is an amenable number.

1212143202021 is a deficient number, since it is larger than the sum of its proper divisors (459778456059).

1212143202021 is a wasteful number, since it uses less digits than its factorization.

1212143202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13932680515.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1212143202021 its reverse (1202023412121), we get a palindrome (2414166614142).

The spelling of 1212143202021 in words is "one trillion, two hundred twelve billion, one hundred forty-three million, two hundred two thousand, twenty-one".