212132030221213 has 4 divisors (see below), whose sum is σ = 213358226927868. Its totient is φ = 210905833514560.

The previous prime is 212132030221211. The next prime is 212132030221217. The reversal of 212132030221213 is 312122030231212.

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 141160133252889 + 70971896968324 = 11881083^2 + 8424482^2 .

It is a cyclic number.

It is not a de Polignac number, because 212132030221213 - 2¹ = 212132030221211 is a prime.

It is a super-3 number, since 3×212132030221213³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212132030221211) 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, 613098353068 + ... + 613098353413.

It is an arithmetic number, because the mean of its divisors is an integer number (53339556731967).

Almost surely, 2^{212132030221213} is an apocalyptic number.

It is an amenable number.

212132030221213 is a deficient number, since it is larger than the sum of its proper divisors (1226196706655).

212132030221213 is a wasteful number, since it uses less digits than its factorization.

212132030221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226196706654.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 212132030221213 its reverse (312122030231212), we get a palindrome (524254060452425).

Subtracting 212132030221213 from its reverse (312122030231212), we obtain a palindrome (99990000009999).

The spelling of 212132030221213 in words is "two hundred twelve trillion, one hundred thirty-two billion, thirty million, two hundred twenty-one thousand, two hundred thirteen".