121030213 has 2 divisors, whose sum is σ = 121030214. Its totient is φ = 121030212.

The previous prime is 121030193. The next prime is 121030241. The reversal of 121030213 is 312030121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67125249 + 53904964 = 8193^2 + 7342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121030213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121030193 and 121030202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121030243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515106 + 60515107.

It is an arithmetic number, because the mean of its divisors is an integer number (60515107).

Almost surely, 2^121030213 is an apocalyptic number.

It is an amenable number.

121030213 is a deficient number, since it is larger than the sum of its proper divisors (1).

121030213 is an equidigital number, since it uses as much as digits as its factorization.

121030213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121030213 is about 11001.3732324651. The cubic root of 121030213 is about 494.6499078797.

Adding to 121030213 its reverse (312030121), we get a palindrome (433060334).

It can be divided in two parts, 12 and 1030213, that added together give a square (1030225 = 1015²).

The spelling of 121030213 in words is "one hundred twenty-one million, thirty thousand, two hundred thirteen".