2012224512421 has 2 divisors, whose sum is σ = 2012224512422. Its totient is φ = 2012224512420.

The previous prime is 2012224512407. The next prime is 2012224512439. The reversal of 2012224512421 is 1242154222102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1583291207521 + 428933304900 = 1258289^2 + 654930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012224512421 - 2³⁹ = 1462468698533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012224512421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012224512451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006112256210 + 1006112256211.

It is an arithmetic number, because the mean of its divisors is an integer number (1006112256211).

Almost surely, 2^{2012224512421} is an apocalyptic number.

It is an amenable number.

2012224512421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012224512421 is an equidigital number, since it uses as much as digits as its factorization.

2012224512421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 2012224512421 its reverse (1242154222102), we get a palindrome (3254378734523).

The spelling of 2012224512421 in words is "two trillion, twelve billion, two hundred twenty-four million, five hundred twelve thousand, four hundred twenty-one".