212100220221037 has 2 divisors, whose sum is σ = 212100220221038. Its totient is φ = 212100220221036.

The previous prime is 212100220220989. The next prime is 212100220221067. The reversal of 212100220221037 is 730122022001212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207807620505156 + 4292599715881 = 14415534^2 + 2071859^2 .

It is a cyclic number.

It is not a de Polignac number, because 212100220221037 - 2²³ = 212100211832429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212100220221067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050110110518 + 106050110110519.

It is an arithmetic number, because the mean of its divisors is an integer number (106050110110519).

Almost surely, 2^{212100220221037} is an apocalyptic number.

It is an amenable number.

212100220221037 is a deficient number, since it is larger than the sum of its proper divisors (1).

212100220221037 is an equidigital number, since it uses as much as digits as its factorization.

212100220221037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 212100220221037 its reverse (730122022001212), we get a palindrome (942222242222249).

The spelling of 212100220221037 in words is "two hundred twelve trillion, one hundred billion, two hundred twenty million, two hundred twenty-one thousand, thirty-seven".