121221301 has 4 divisors (see below), whose sum is σ = 121265100. Its totient is φ = 121177504.

The previous prime is 121221283. The next prime is 121221337. The reversal of 121221301 is 103122121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62331025 + 58890276 = 7895^2 + 7674^2 .

It is a cyclic number.

It is not a de Polignac number, because 121221301 - 2⁷ = 121221173 is a prime.

It is a super-2 number, since 2×121221301² = 29389207632265202, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221371) 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, 17446 + ... + 23383.

It is an arithmetic number, because the mean of its divisors is an integer number (30316275).

Almost surely, 2^121221301 is an apocalyptic number.

It is an amenable number.

121221301 is a deficient number, since it is larger than the sum of its proper divisors (43799).

121221301 is an equidigital number, since it uses as much as digits as its factorization.

121221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43798.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121221301 is about 11010.0545411910. The cubic root of 121221301 is about 494.9100962459.

Adding to 121221301 its reverse (103122121), we get a palindrome (224343422).

The spelling of 121221301 in words is "one hundred twenty-one million, two hundred twenty-one thousand, three hundred one".