12212121220037 has 2 divisors, whose sum is σ = 12212121220038. Its totient is φ = 12212121220036.

The previous prime is 12212121220021. The next prime is 12212121220051. The reversal of 12212121220037 is 73002212121221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12046792780801 + 165328439236 = 3470849^2 + 406606^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212121220037 - 2⁴ = 12212121220021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212121219988 and 12212121220015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212121220067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106060610018 + 6106060610019.

It is an arithmetic number, because the mean of its divisors is an integer number (6106060610019).

Almost surely, 2^{12212121220037} is an apocalyptic number.

It is an amenable number.

12212121220037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212121220037 is an equidigital number, since it uses as much as digits as its factorization.

12212121220037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 12212121220037 its reverse (73002212121221), we get a palindrome (85214333341258).

The spelling of 12212121220037 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, thirty-seven".