122121020210149 has 2 divisors, whose sum is σ = 122121020210150. Its totient is φ = 122121020210148.

The previous prime is 122121020210143. The next prime is 122121020210279. The reversal of 122121020210149 is 941012020121221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67631791061025 + 54489229149124 = 8223855^2 + 7381682^2 .

It is a cyclic number.

It is not a de Polignac number, because 122121020210149 - 2⁹ = 122121020209637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122121020210143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060510105074 + 61060510105075.

It is an arithmetic number, because the mean of its divisors is an integer number (61060510105075).

Almost surely, 2^{122121020210149} is an apocalyptic number.

It is an amenable number.

122121020210149 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121020210149 is an equidigital number, since it uses as much as digits as its factorization.

122121020210149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 122121020210149 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, twenty million, two hundred ten thousand, one hundred forty-nine".