210001219937 has 2 divisors, whose sum is σ = 210001219938. Its totient is φ = 210001219936.

The previous prime is 210001219919. The next prime is 210001220027. The reversal of 210001219937 is 739912100012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207976129936 + 2025090001 = 456044^2 + 45001^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001219937 - 2¹⁶ = 210001154401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210001219897 and 210001219906.

It is not a weakly prime, because it can be changed into another prime (210001219907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000609968 + 105000609969.

It is an arithmetic number, because the mean of its divisors is an integer number (105000609969).

Almost surely, 2^210001219937 is an apocalyptic number.

It is an amenable number.

210001219937 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001219937 is an equidigital number, since it uses as much as digits as its factorization.

210001219937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

Adding to 210001219937 its reverse (739912100012), we get a palindrome (949913319949).

The spelling of 210001219937 in words is "two hundred ten billion, one million, two hundred nineteen thousand, nine hundred thirty-seven".