2101220210237 has 2 divisors, whose sum is σ = 2101220210238. Its totient is φ = 2101220210236.

The previous prime is 2101220210039. The next prime is 2101220210311. The reversal of 2101220210237 is 7320120221012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1611043794361 + 490176415876 = 1269269^2 + 700126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101220210237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101220210437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050610105118 + 1050610105119.

It is an arithmetic number, because the mean of its divisors is an integer number (1050610105119).

Almost surely, 2^{2101220210237} is an apocalyptic number.

It is an amenable number.

2101220210237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101220210237 is an equidigital number, since it uses as much as digits as its factorization.

2101220210237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 2101220210237 its reverse (7320120221012), we get a palindrome (9421340431249).

The spelling of 2101220210237 in words is "two trillion, one hundred one billion, two hundred twenty million, two hundred ten thousand, two hundred thirty-seven".