234224342021 has 4 divisors (see below), whose sum is σ = 242301043500. Its totient is φ = 226147640544.

The previous prime is 234224342017. The next prime is 234224342029. The reversal of 234224342021 is 120243422432.

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 72387902500 + 161836439521 = 269050^2 + 402289^2 .

It is a cyclic number.

It is not a de Polignac number, because 234224342021 - 2² = 234224342017 is a prime.

It is a super-2 number, since 2×234224342021² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 8076701449 = 234224342021 / (2 + 3 + 4 + 2 + 2 + 4 + 3 + 4 + 2 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234224342029) 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, 4038350696 + ... + 4038350753.

It is an arithmetic number, because the mean of its divisors is an integer number (60575260875).

Almost surely, 2^234224342021 is an apocalyptic number.

It is an amenable number.

234224342021 is a deficient number, since it is larger than the sum of its proper divisors (8076701479).

234224342021 is an equidigital number, since it uses as much as digits as its factorization.

234224342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076701478.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 234224342021 its reverse (120243422432), we get a palindrome (354467764453).

The spelling of 234224342021 in words is "two hundred thirty-four billion, two hundred twenty-four million, three hundred forty-two thousand, twenty-one".