211212000001 has 2 divisors, whose sum is σ = 211212000002. Its totient is φ = 211212000000.

The previous prime is 211211999941. The next prime is 211212000019. The reversal of 211212000001 is 100000212112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207025910001 + 4186090000 = 455001^2 + 64700^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212000001 - 2⁹ = 211211999489 is a prime.

It is a super-2 number, since 2×211212000001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211212000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606000000 + 105606000001.

It is an arithmetic number, because the mean of its divisors is an integer number (105606000001).

Almost surely, 2^211212000001 is an apocalyptic number.

It is an amenable number.

211212000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212000001 is an equidigital number, since it uses as much as digits as its factorization.

211212000001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211212000001 its reverse (100000212112), we get a palindrome (311212212113).

It can be divided in two parts, 211 and 212000001, that added together give a palindrome (212000212).

The spelling of 211212000001 in words is "two hundred eleven billion, two hundred twelve million, one", and thus it is an aban number.