34021212421 has 16 divisors (see below), whose sum is σ = 39747502080. Its totient is φ = 28516630320.

The previous prime is 34021212383. The next prime is 34021212439. The reversal of 34021212421 is 12421212043.

It is a cyclic number.

It is not a de Polignac number, because 34021212421 - 2⁹ = 34021211909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34021212392 and 34021212401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34021212721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136761 + ... + 294526.

It is an arithmetic number, because the mean of its divisors is an integer number (2484218880).

Almost surely, 2^34021212421 is an apocalyptic number.

It is an amenable number.

34021212421 is a deficient number, since it is larger than the sum of its proper divisors (5726289659).

34021212421 is a wasteful number, since it uses less digits than its factorization.

34021212421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431544.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 34021212421 its reverse (12421212043), we get a palindrome (46442424464).

The spelling of 34021212421 in words is "thirty-four billion, twenty-one million, two hundred twelve thousand, four hundred twenty-one".