10121121221149 has 2 divisors, whose sum is σ = 10121121221150. Its totient is φ = 10121121221148.

The previous prime is 10121121221017. The next prime is 10121121221173. The reversal of 10121121221149 is 94112212112101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7005454955524 + 3115666265625 = 2646782^2 + 1765125^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121121221149 - 2²³ = 10121112832541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121121221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060560610574 + 5060560610575.

It is an arithmetic number, because the mean of its divisors is an integer number (5060560610575).

Almost surely, 2^{10121121221149} is an apocalyptic number.

It is an amenable number.

10121121221149 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121121221149 is an equidigital number, since it uses as much as digits as its factorization.

10121121221149 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 28.

The spelling of 10121121221149 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred forty-nine".