20212001221213 has 8 divisors (see below), whose sum is σ = 20439360339840. Its totient is φ = 19984647835680.

The previous prime is 20212001221211. The next prime is 20212001221231. The reversal of 20212001221213 is 31212210021202.

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 20212001221213 - 2¹ = 20212001221211 is a prime.

It is a super-2 number, since 2×20212001221213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212001221211) 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, 5865228 + ... + 8650138.

It is an arithmetic number, because the mean of its divisors is an integer number (2554920042480).

Almost surely, 2^{20212001221213} is an apocalyptic number.

It is an amenable number.

20212001221213 is a deficient number, since it is larger than the sum of its proper divisors (227359118627).

20212001221213 is an equidigital number, since it uses as much as digits as its factorization.

20212001221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866547.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20212001221213 its reverse (31212210021202), we get a palindrome (51424211242415).

The spelling of 20212001221213 in words is "twenty trillion, two hundred twelve billion, one million, two hundred twenty-one thousand, two hundred thirteen".