212231121301 has 2 divisors, whose sum is σ = 212231121302. Its totient is φ = 212231121300.

The previous prime is 212231121233. The next prime is 212231121343. The reversal of 212231121301 is 103121132212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122081058801 + 90150062500 = 349401^2 + 300250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212231121301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212231121101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115560650 + 106115560651.

It is an arithmetic number, because the mean of its divisors is an integer number (106115560651).

Almost surely, 2^212231121301 is an apocalyptic number.

It is an amenable number.

212231121301 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231121301 is an equidigital number, since it uses as much as digits as its factorization.

212231121301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212231121301 its reverse (103121132212), we get a palindrome (315352253513).

The spelling of 212231121301 in words is "two hundred twelve billion, two hundred thirty-one million, one hundred twenty-one thousand, three hundred one".