121222601 has 2 divisors, whose sum is σ = 121222602. Its totient is φ = 121222600.

The previous prime is 121222561. The next prime is 121222613. The reversal of 121222601 is 106222121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97990201 + 23232400 = 9899^2 + 4820^2 .

It is an emirp because it is prime and its reverse (106222121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121222601.

It is not a weakly prime, because it can be changed into another prime (121222901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611300 + 60611301.

It is an arithmetic number, because the mean of its divisors is an integer number (60611301).

Almost surely, 2^121222601 is an apocalyptic number.

It is an amenable number.

121222601 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222601 is an equidigital number, since it uses as much as digits as its factorization.

121222601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 121222601 is about 11010.1135779791. The cubic root of 121222601 is about 494.9118654092.

Adding to 121222601 its reverse (106222121), we get a palindrome (227444722).

The spelling of 121222601 in words is "one hundred twenty-one million, two hundred twenty-two thousand, six hundred one".