210212001220961 has 2 divisors, whose sum is σ = 210212001220962. Its totient is φ = 210212001220960.

The previous prime is 210212001220933. The next prime is 210212001221017. The reversal of 210212001220961 is 169022100212012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122079428689936 + 88132572531025 = 11048956^2 + 9387895^2 .

It is a cyclic number.

It is not a de Polignac number, because 210212001220961 - 2²⁶ = 210211934112097 is a prime.

It is not a weakly prime, because it can be changed into another prime (210212001240961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106000610480 + 105106000610481.

It is an arithmetic number, because the mean of its divisors is an integer number (105106000610481).

Almost surely, 2^{210212001220961} is an apocalyptic number.

It is an amenable number.

210212001220961 is a deficient number, since it is larger than the sum of its proper divisors (1).

210212001220961 is an equidigital number, since it uses as much as digits as its factorization.

210212001220961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 210212001220961 its reverse (169022100212012), we get a palindrome (379234101432973).

The spelling of 210212001220961 in words is "two hundred ten trillion, two hundred twelve billion, one million, two hundred twenty thousand, nine hundred sixty-one".