212012121021213 has 16 divisors (see below), whose sum is σ = 297819395481600. Its totient is φ = 133786056481200.

The previous prime is 212012121021167. The next prime is 212012121021271. The reversal of 212012121021213 is 312120121210212.

212012121021213 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212012121021213 - 2²¹ = 212012118924061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212012121021213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012121025213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615708023 + ... + 1615839236.

It is an arithmetic number, because the mean of its divisors is an integer number (18613712217600).

Almost surely, 2^{212012121021213} is an apocalyptic number.

It is an amenable number.

212012121021213 is a deficient number, since it is larger than the sum of its proper divisors (85807274460387).

212012121021213 is a wasteful number, since it uses less digits than its factorization.

212012121021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231548432.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 212012121021213 its reverse (312120121210212), we get a palindrome (524132242231425).

The spelling of 212012121021213 in words is "two hundred twelve trillion, twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred thirteen".