20212132133213 has 4 divisors (see below), whose sum is σ = 20214594333180. Its totient is φ = 20209669933248.

The previous prime is 20212132133189. The next prime is 20212132133227. The reversal of 20212132133213 is 31233123121202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1036604987044 + 19175527146169 = 1018138^2 + 4378987^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212132133213 - 2¹⁴ = 20212132116829 is a prime.

It is a super-2 number, since 2×20212132133213² (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 (20212132133233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231087670 + ... + 1231104087.

It is an arithmetic number, because the mean of its divisors is an integer number (5053648583295).

Almost surely, 2^{20212132133213} is an apocalyptic number.

It is an amenable number.

20212132133213 is a deficient number, since it is larger than the sum of its proper divisors (2462199967).

20212132133213 is an equidigital number, since it uses as much as digits as its factorization.

20212132133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462199966.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20212132133213 its reverse (31233123121202), we get a palindrome (51445255254415).

The spelling of 20212132133213 in words is "twenty trillion, two hundred twelve billion, one hundred thirty-two million, one hundred thirty-three thousand, two hundred thirteen".