101221212100049 has 2 divisors, whose sum is σ = 101221212100050. Its totient is φ = 101221212100048.

The previous prime is 101221212100009. The next prime is 101221212100081. The reversal of 101221212100049 is 940001212122101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101166240608449 + 54971491600 = 10058143^2 + 234460^2 .

It is a cyclic number.

It is not a de Polignac number, because 101221212100049 - 2²⁴ = 101221195322833 is a prime.

It is not a weakly prime, because it can be changed into another prime (101221212100009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610606050024 + 50610606050025.

It is an arithmetic number, because the mean of its divisors is an integer number (50610606050025).

Almost surely, 2^{101221212100049} is an apocalyptic number.

It is an amenable number.

101221212100049 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221212100049 is an equidigital number, since it uses as much as digits as its factorization.

101221212100049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 101221212100049 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, forty-nine".