121000357 has 2 divisors, whose sum is σ = 121000358. Its totient is φ = 121000356.

The previous prime is 121000343. The next prime is 121000361. The reversal of 121000357 is 753000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112232836 + 8767521 = 10594^2 + 2961^2 .

It is an emirp because it is prime and its reverse (753000121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500178 + 60500179.

It is an arithmetic number, because the mean of its divisors is an integer number (60500179).

Almost surely, 2^121000357 is an apocalyptic number.

It is an amenable number.

121000357 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000357 is an equidigital number, since it uses as much as digits as its factorization.

121000357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 121000357 is about 11000.0162272608. The cubic root of 121000357 is about 494.6092307578.

Adding to 121000357 its reverse (753000121), we get a palindrome (874000478).

The spelling of 121000357 in words is "one hundred twenty-one million, three hundred fifty-seven", and thus it is an aban number.