1234204242221 has 8 divisors (see below), whose sum is σ = 1242634457664. Its totient is φ = 1225784495520.

The previous prime is 1234204242181. The next prime is 1234204242233. The reversal of 1234204242221 is 1222424024321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1234204242221 - 2¹⁸ = 1234203980077 is a prime.

It is a super-2 number, since 2×1234204242221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234204242241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380520 + ... + 2852241.

It is an arithmetic number, because the mean of its divisors is an integer number (155329307208).

Almost surely, 2^{1234204242221} is an apocalyptic number.

It is an amenable number.

1234204242221 is a deficient number, since it is larger than the sum of its proper divisors (8430215443).

1234204242221 is a wasteful number, since it uses less digits than its factorization.

1234204242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234371.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 1234204242221 its reverse (1222424024321), we get a palindrome (2456628266542).

The spelling of 1234204242221 in words is "one trillion, two hundred thirty-four billion, two hundred four million, two hundred forty-two thousand, two hundred twenty-one".