211200001 has 2 divisors, whose sum is σ = 211200002. Its totient is φ = 211200000.

The previous prime is 211199987. The next prime is 211200037. The reversal of 211200001 is 100002112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163865601 + 47334400 = 12801^2 + 6880^2 .

It is a cyclic number.

It is not a de Polignac number, because 211200001 - 2²¹ = 209102849 is a prime.

It is not a weakly prime, because it can be changed into another prime (211200091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600000 + 105600001.

It is an arithmetic number, because the mean of its divisors is an integer number (105600001).

Almost surely, 2^211200001 is an apocalyptic number.

It is an amenable number.

211200001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211200001 is an equidigital number, since it uses as much as digits as its factorization.

211200001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 211200001 is about 14532.7217340731. The cubic root of 211200001 is about 595.5222221214.

Adding to 211200001 its reverse (100002112), we get a palindrome (311202113).

The spelling of 211200001 in words is "two hundred eleven million, two hundred thousand, one".