102021211049 has 2 divisors, whose sum is σ = 102021211050. Its totient is φ = 102021211048.

The previous prime is 102021211001. The next prime is 102021211091. The reversal of 102021211049 is 940112120201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80453351449 + 21567859600 = 283643^2 + 146860^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021211049 - 2²⁴ = 102004433833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102021211549) 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, 51010605524 + 51010605525.

It is an arithmetic number, because the mean of its divisors is an integer number (51010605525).

Almost surely, 2^102021211049 is an apocalyptic number.

It is an amenable number.

102021211049 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021211049 is an equidigital number, since it uses as much as digits as its factorization.

102021211049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 102021211049 in words is "one hundred two billion, twenty-one million, two hundred eleven thousand, forty-nine".