21434343122 has 8 divisors (see below), whose sum is σ = 32157466236. Its totient is φ = 10715187712.

The previous prime is 21434343097. The next prime is 21434343143. The reversal of 21434343122 is 22134343412.

It can be written as a sum of positive squares in 2 ways, for example, as 15077629681 + 6356713441 = 122791^2 + 79729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978383 + ... + 1000050.

Almost surely, 2^21434343122 is an apocalyptic number.

21434343122 is a deficient number, since it is larger than the sum of its proper divisors (10723123114).

21434343122 is a wasteful number, since it uses less digits than its factorization.

21434343122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983852.

The product of its digits is 13824, while the sum is 29.

Adding to 21434343122 its reverse (22134343412), we get a palindrome (43568686534).

The spelling of 21434343122 in words is "twenty-one billion, four hundred thirty-four million, three hundred forty-three thousand, one hundred twenty-two".