121300203102121 has 4 divisors (see below), whose sum is σ = 121314451930452. Its totient is φ = 121285954273792.

The previous prime is 121300203102103. The next prime is 121300203102139. The reversal of 121300203102121 is 121201302003121.

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

It is an interprime number because it is at equal distance from previous prime (121300203102103) and next prime (121300203102139).

It can be written as a sum of positive squares in 2 ways, for example, as 70812982352025 + 50487220750096 = 8415045^2 + 7105436^2 .

It is a cyclic number.

It is not a de Polignac number, because 121300203102121 - 2¹¹ = 121300203100073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121300203102521) 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, 7124401396 + ... + 7124418421.

It is an arithmetic number, because the mean of its divisors is an integer number (30328612982613).

Almost surely, 2^{121300203102121} is an apocalyptic number.

It is an amenable number.

121300203102121 is a deficient number, since it is larger than the sum of its proper divisors (14248828331).

121300203102121 is an equidigital number, since it uses as much as digits as its factorization.

121300203102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14248828330.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121300203102121 its reverse (121201302003121), we get a palindrome (242501505105242).

The spelling of 121300203102121 in words is "one hundred twenty-one trillion, three hundred billion, two hundred three million, one hundred two thousand, one hundred twenty-one".