21201000211 has 2 divisors, whose sum is σ = 21201000212. Its totient is φ = 21201000210.

The previous prime is 21201000181. The next prime is 21201000221. The reversal of 21201000211 is 11200010212.

It is an a-pointer prime, because the next prime (21201000221) can be obtained adding 21201000211 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21201000211 - 2²³ = 21192611603 is a prime.

It is not a weakly prime, because it can be changed into another prime (21201000221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600500105 + 10600500106.

It is an arithmetic number, because the mean of its divisors is an integer number (10600500106).

Almost surely, 2^21201000211 is an apocalyptic number.

21201000211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201000211 is an equidigital number, since it uses as much as digits as its factorization.

21201000211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21201000211 its reverse (11200010212), we get a palindrome (32401010423).

The spelling of 21201000211 in words is "twenty-one billion, two hundred one million, two hundred eleven", and thus it is an aban number.