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121322501 is a prime number
BaseRepresentation
bin1110011101100…
…11110000000101
322110021211011222
413032303300011
5222024310001
620012210125
73002136626
oct716636005
9273254158
10121322501
1162535433
1234769945
131c19ab81
1412181a4d
15a9b761b
hex73b3c05

121322501 has 2 divisors, whose sum is σ = 121322502. Its totient is φ = 121322500.

The previous prime is 121322491. The next prime is 121322503. The reversal of 121322501 is 105223121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100982401 + 20340100 = 10049^2 + 4510^2 .

It is a cyclic number.

It is not a de Polignac number, because 121322501 - 210 = 121321477 is a prime.

It is a Sophie Germain prime.

Together with 121322503, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121322501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121322503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60661250 + 60661251.

It is an arithmetic number, because the mean of its divisors is an integer number (60661251).

Almost surely, 2121322501 is an apocalyptic number.

It is an amenable number.

121322501 is a deficient number, since it is larger than the sum of its proper divisors (1).

121322501 is an equidigital number, since it uses as much as digits as its factorization.

121322501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121322501 is about 11014.6493816190. The cubic root of 121322501 is about 495.0477809878.

Adding to 121322501 its reverse (105223121), we get a palindrome (226545622).

The spelling of 121322501 in words is "one hundred twenty-one million, three hundred twenty-two thousand, five hundred one".