121742227 has 2 divisors, whose sum is σ = 121742228. Its totient is φ = 121742226.

The previous prime is 121742221. The next prime is 121742233. The reversal of 121742227 is 722247121.

It is a balanced prime because it is at equal distance from previous prime (121742221) and next prime (121742233).

It is an emirp because it is prime and its reverse (722247121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121742227 - 2²³ = 113353619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121742195 and 121742204.

It is not a weakly prime, because it can be changed into another prime (121742221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60871113 + 60871114.

It is an arithmetic number, because the mean of its divisors is an integer number (60871114).

Almost surely, 2^121742227 is an apocalyptic number.

121742227 is a deficient number, since it is larger than the sum of its proper divisors (1).

121742227 is an equidigital number, since it uses as much as digits as its factorization.

121742227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 28.

The square root of 121742227 is about 11033.6860114832. The cubic root of 121742227 is about 495.6180112046.

Adding to 121742227 its reverse (722247121), we get a palindrome (843989348).

The spelling of 121742227 in words is "one hundred twenty-one million, seven hundred forty-two thousand, two hundred twenty-seven".