121602281 has 2 divisors, whose sum is σ = 121602282. Its totient is φ = 121602280.

The previous prime is 121602277. The next prime is 121602289. The reversal of 121602281 is 182206121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111936400 + 9665881 = 10580^2 + 3109^2 .

It is a cyclic number.

It is not a de Polignac number, because 121602281 - 2² = 121602277 is a prime.

It is a super-2 number, since 2×121602281² = 29574229488805922, which contains 22 as substring.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (121602289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60801140 + 60801141.

It is an arithmetic number, because the mean of its divisors is an integer number (60801141).

Almost surely, 2^121602281 is an apocalyptic number.

It is an amenable number.

121602281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121602281 is an equidigital number, since it uses as much as digits as its factorization.

121602281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 121602281 is about 11027.3424268951. The cubic root of 121602281 is about 495.4280295966.

It can be divided in two parts, 12160 and 2281, that added together give a palindrome (14441).

The spelling of 121602281 in words is "one hundred twenty-one million, six hundred two thousand, two hundred eighty-one".