211201000961 has 2 divisors, whose sum is σ = 211201000962. Its totient is φ = 211201000960.

The previous prime is 211201000949. The next prime is 211201001029. The reversal of 211201000961 is 169000102112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118994641936 + 92206359025 = 344956^2 + 303655^2 .

It is a cyclic number.

It is not a de Polignac number, because 211201000961 - 2¹⁰ = 211200999937 is a prime.

It is not a weakly prime, because it can be changed into another prime (211201000861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600500480 + 105600500481.

It is an arithmetic number, because the mean of its divisors is an integer number (105600500481).

Almost surely, 2^211201000961 is an apocalyptic number.

It is an amenable number.

211201000961 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201000961 is an equidigital number, since it uses as much as digits as its factorization.

211201000961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 211201000961 in words is "two hundred eleven billion, two hundred one million, nine hundred sixty-one", and thus it is an aban number.