121030501 has 4 divisors (see below), whose sum is σ = 121052512. Its totient is φ = 121008492.

The previous prime is 121030487. The next prime is 121030519. The reversal of 121030501 is 105030121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121030501 is a prime.

It is a super-2 number, since 2×121030501² = 29296764344622002, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080 + ... + 16366.

It is an arithmetic number, because the mean of its divisors is an integer number (30263128).

Almost surely, 2^121030501 is an apocalyptic number.

It is an amenable number.

121030501 is a deficient number, since it is larger than the sum of its proper divisors (22011).

121030501 is a wasteful number, since it uses less digits than its factorization.

121030501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22010.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 121030501 is about 11001.3863217324. The cubic root of 121030501 is about 494.6503002309.

Adding to 121030501 its reverse (105030121), we get a palindrome (226060622).

The spelling of 121030501 in words is "one hundred twenty-one million, thirty thousand, five hundred one".