121020212303 has 4 divisors (see below), whose sum is σ = 126281960688. Its totient is φ = 115758463920.

The previous prime is 121020212281. The next prime is 121020212309. The reversal of 121020212303 is 303212020121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303212020121 = 563 ⋅538564867.

It is a cyclic number.

It is not a de Polignac number, because 121020212303 - 2²⁴ = 121003435087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020212309) 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, 2630874158 + ... + 2630874203.

It is an arithmetic number, because the mean of its divisors is an integer number (31570490172).

Almost surely, 2^121020212303 is an apocalyptic number.

121020212303 is a deficient number, since it is larger than the sum of its proper divisors (5261748385).

121020212303 is an equidigital number, since it uses as much as digits as its factorization.

121020212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261748384.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 121020212303 its reverse (303212020121), we get a palindrome (424232232424).

The spelling of 121020212303 in words is "one hundred twenty-one billion, twenty million, two hundred twelve thousand, three hundred three".