101210020049 has 2 divisors, whose sum is σ = 101210020050. Its totient is φ = 101210020048.

The previous prime is 101210019991. The next prime is 101210020061. The reversal of 101210020049 is 940020012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68134050625 + 33075969424 = 261025^2 + 181868^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210020049 - 2¹² = 101210015953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101210020049.

It is not a weakly prime, because it can be changed into another prime (101210020069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605010024 + 50605010025.

It is an arithmetic number, because the mean of its divisors is an integer number (50605010025).

Almost surely, 2^101210020049 is an apocalyptic number.

It is an amenable number.

101210020049 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210020049 is an equidigital number, since it uses as much as digits as its factorization.

101210020049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 101210020049 in words is "one hundred one billion, two hundred ten million, twenty thousand, forty-nine".