212122213301 has 4 divisors (see below), whose sum is σ = 224599990572. Its totient is φ = 199644436032.

The previous prime is 212122213273. The next prime is 212122213357. The reversal of 212122213301 is 103312221212.

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 81696502276 + 130425711025 = 285826^2 + 361145^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122213301 - 2³⁴ = 194942344117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122212301) 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, 6238888610 + ... + 6238888643.

It is an arithmetic number, because the mean of its divisors is an integer number (56149997643).

Almost surely, 2^212122213301 is an apocalyptic number.

It is an amenable number.

212122213301 is a deficient number, since it is larger than the sum of its proper divisors (12477777271).

212122213301 is a wasteful number, since it uses less digits than its factorization.

212122213301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12477777270.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212122213301 its reverse (103312221212), we get a palindrome (315434434513).

The spelling of 212122213301 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred thirteen thousand, three hundred one".