120101110109221 has 2 divisors, whose sum is σ = 120101110109222. Its totient is φ = 120101110109220.

The previous prime is 120101110109131. The next prime is 120101110109243. The reversal of 120101110109221 is 122901011101021.

It is a happy number.

It is an a-pointer prime, because the next prime (120101110109243) can be obtained adding 120101110109221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91622226802500 + 28478883306721 = 9571950^2 + 5336561^2 .

It is an emirp because it is prime and its reverse (122901011101021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120101110109221 - 2²⁹ = 120100573238309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120101110109192 and 120101110109201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120101110109261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050555054610 + 60050555054611.

It is an arithmetic number, because the mean of its divisors is an integer number (60050555054611).

Almost surely, 2^{120101110109221} is an apocalyptic number.

It is an amenable number.

120101110109221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101110109221 is an equidigital number, since it uses as much as digits as its factorization.

120101110109221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 120101110109221 in words is "one hundred twenty trillion, one hundred one billion, one hundred ten million, one hundred nine thousand, two hundred twenty-one".