101211010247 has 2 divisors, whose sum is σ = 101211010248. Its totient is φ = 101211010246.

The previous prime is 101211010139. The next prime is 101211010309. The reversal of 101211010247 is 742010112101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101211010247 - 2¹² = 101211006151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211010847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605505123 + 50605505124.

It is an arithmetic number, because the mean of its divisors is an integer number (50605505124).

Almost surely, 2^101211010247 is an apocalyptic number.

101211010247 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211010247 is an equidigital number, since it uses as much as digits as its factorization.

101211010247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 101211010247 its reverse (742010112101), we get a palindrome (843221122348).

The spelling of 101211010247 in words is "one hundred one billion, two hundred eleven million, ten thousand, two hundred forty-seven".