21323022434234 has 4 divisors (see below), whose sum is σ = 31984533651354. Its totient is φ = 10661511217116.

The previous prime is 21323022434173. The next prime is 21323022434243. The reversal of 21323022434234 is 43243422032312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20404689294025 + 918333140209 = 4517155^2 + 958297^2 .

It is a super-3 number, since 3×21323022434234³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21323022434194 and 21323022434203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330755608557 + ... + 5330755608560.

Almost surely, 2^{21323022434234} is an apocalyptic number.

21323022434234 is a deficient number, since it is larger than the sum of its proper divisors (10661511217120).

21323022434234 is a wasteful number, since it uses less digits than its factorization.

21323022434234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661511217119.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 21323022434234 its reverse (43243422032312), we get a palindrome (64566444466546).

The spelling of 21323022434234 in words is "twenty-one trillion, three hundred twenty-three billion, twenty-two million, four hundred thirty-four thousand, two hundred thirty-four".