212101010121213 has 12 divisors (see below), whose sum is σ = 306368606735100. Its totient is φ = 141400451412096.

The previous prime is 212101010121197. The next prime is 212101010121223. The reversal of 212101010121213 is 312121010101212.

It is a happy number.

212101010121213 is a `hidden beast` number, since 21 + 210 + 101 + 0 + 121 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17714898134649 + 194386111986564 = 4208907^2 + 13942242^2 .

It is not a de Polignac number, because 212101010121213 - 2⁴ = 212101010121197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101010121223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12341388 + ... + 24010661.

It is an arithmetic number, because the mean of its divisors is an integer number (25530717227925).

Almost surely, 2^{212101010121213} is an apocalyptic number.

It is an amenable number.

212101010121213 is a deficient number, since it is larger than the sum of its proper divisors (94267596613887).

212101010121213 is a wasteful number, since it uses less digits than its factorization.

212101010121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37000348 (or 37000345 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 212101010121213 its reverse (312121010101212), we get a palindrome (524222020222425).

The spelling of 212101010121213 in words is "two hundred twelve trillion, one hundred one billion, ten million, one hundred twenty-one thousand, two hundred thirteen".