234213102421 has 4 divisors (see below), whose sum is σ = 235507097644. Its totient is φ = 232919107200.

The previous prime is 234213102407. The next prime is 234213102427. The reversal of 234213102421 is 124201312432.

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 73924172100 + 160288930321 = 271890^2 + 400361^2 .

It is a cyclic number.

It is not a de Polignac number, because 234213102421 - 2⁷ = 234213102293 is a prime.

It is a super-2 number, since 2×234213102421² (a number of 24 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 (234213102427) 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, 646997340 + ... + 646997701.

It is an arithmetic number, because the mean of its divisors is an integer number (58876774411).

Almost surely, 2^234213102421 is an apocalyptic number.

It is an amenable number.

234213102421 is a deficient number, since it is larger than the sum of its proper divisors (1293995223).

234213102421 is a wasteful number, since it uses less digits than its factorization.

234213102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293995222.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 234213102421 its reverse (124201312432), we get a palindrome (358414414853).

The spelling of 234213102421 in words is "two hundred thirty-four billion, two hundred thirteen million, one hundred two thousand, four hundred twenty-one".