121030207 has 4 divisors (see below), whose sum is σ = 122836696. Its totient is φ = 119223720.

The previous prime is 121030193. The next prime is 121030213. The reversal of 121030207 is 702030121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702030121 = 13 ⋅54002317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121030207 is a prime.

It is a super-2 number, since 2×121030207² = 29296622012925698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903144 + ... + 903277.

It is an arithmetic number, because the mean of its divisors is an integer number (30709174).

Almost surely, 2^121030207 is an apocalyptic number.

121030207 is a deficient number, since it is larger than the sum of its proper divisors (1806489).

121030207 is an equidigital number, since it uses as much as digits as its factorization.

121030207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806488.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 121030207 is about 11001.3729597719. The cubic root of 121030207 is about 494.6498997057.

Adding to 121030207 its reverse (702030121), we get a palindrome (823060328).

The spelling of 121030207 in words is "one hundred twenty-one million, thirty thousand, two hundred seven".