121530293 has 2 divisors, whose sum is σ = 121530294. Its totient is φ = 121530292.

The previous prime is 121530209. The next prime is 121530307. The reversal of 121530293 is 392035121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115068529 + 6461764 = 10727^2 + 2542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121530293 is a prime.

It is a super-2 number, since 2×121530293² = 29539224233331698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121530193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60765146 + 60765147.

It is an arithmetic number, because the mean of its divisors is an integer number (60765147).

Almost surely, 2^121530293 is an apocalyptic number.

It is an amenable number.

121530293 is a deficient number, since it is larger than the sum of its proper divisors (1).

121530293 is an equidigital number, since it uses as much as digits as its factorization.

121530293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 121530293 is about 11024.0778752692. The cubic root of 121530293 is about 495.3302465813.

The spelling of 121530293 in words is "one hundred twenty-one million, five hundred thirty thousand, two hundred ninety-three".