221013102049 has 2 divisors, whose sum is σ = 221013102050. Its totient is φ = 221013102048.

The previous prime is 221013102041. The next prime is 221013102059. The reversal of 221013102049 is 940201310122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190451069649 + 30562032400 = 436407^2 + 174820^2 .

It is a cyclic number.

It is not a de Polignac number, because 221013102049 - 2³ = 221013102041 is a prime.

It is not a weakly prime, because it can be changed into another prime (221013102041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506551024 + 110506551025.

It is an arithmetic number, because the mean of its divisors is an integer number (110506551025).

Almost surely, 2^221013102049 is an apocalyptic number.

It is an amenable number.

221013102049 is a deficient number, since it is larger than the sum of its proper divisors (1).

221013102049 is an equidigital number, since it uses as much as digits as its factorization.

221013102049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 221013102049 in words is "two hundred twenty-one billion, thirteen million, one hundred two thousand, forty-nine".