234144422421 has 64 divisors (see below), whose sum is σ = 396829440000. Its totient is φ = 119494538496.

The previous prime is 234144422419. The next prime is 234144422431. The reversal of 234144422421 is 124224441432.

It is not a de Polignac number, because 234144422421 - 2¹ = 234144422419 is a prime.

It is a super-2 number, since 2×234144422421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234144422431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1743330 + ... + 1872828.

It is an arithmetic number, because the mean of its divisors is an integer number (6200460000).

Almost surely, 2^234144422421 is an apocalyptic number.

234144422421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

234144422421 is a deficient number, since it is larger than the sum of its proper divisors (162685017579).

234144422421 is a wasteful number, since it uses less digits than its factorization.

234144422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129738.

The product of its digits is 49152, while the sum is 33.

Adding to 234144422421 its reverse (124224441432), we get a palindrome (358368863853).

The spelling of 234144422421 in words is "two hundred thirty-four billion, one hundred forty-four million, four hundred twenty-two thousand, four hundred twenty-one".