202412224121 has 4 divisors (see below), whose sum is σ = 202420660644. Its totient is φ = 202403787600.

The previous prime is 202412224093. The next prime is 202412224129. The reversal of 202412224121 is 121422214202.

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 195661136896 + 6751087225 = 442336^2 + 82165^2 .

It is a cyclic number.

It is not a de Polignac number, because 202412224121 - 2¹⁸ = 202411961977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202412224129) 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, 4182170 + ... + 4230291.

It is an arithmetic number, because the mean of its divisors is an integer number (50605165161).

Almost surely, 2^202412224121 is an apocalyptic number.

It is an amenable number.

202412224121 is a deficient number, since it is larger than the sum of its proper divisors (8436523).

202412224121 is an equidigital number, since it uses as much as digits as its factorization.

202412224121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8436522.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 202412224121 its reverse (121422214202), we get a palindrome (323834438323).

The spelling of 202412224121 in words is "two hundred two billion, four hundred twelve million, two hundred twenty-four thousand, one hundred twenty-one".