21114122242 has 8 divisors (see below), whose sum is σ = 31704843132. Its totient is φ = 10545841200.

The previous prime is 21114122233. The next prime is 21114122269. The reversal of 21114122242 is 24222141112.

It can be written as a sum of positive squares in 2 ways, for example, as 20560978881 + 553143361 = 143391^2 + 23519^2 .

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, 5607609 + ... + 5611372.

Almost surely, 2^21114122242 is an apocalyptic number.

21114122242 is a deficient number, since it is larger than the sum of its proper divisors (10590720890).

21114122242 is a wasteful number, since it uses less digits than its factorization.

21114122242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11219924.

The product of its digits is 512, while the sum is 22.

Adding to 21114122242 its reverse (24222141112), we get a palindrome (45336263354).

The spelling of 21114122242 in words is "twenty-one billion, one hundred fourteen million, one hundred twenty-two thousand, two hundred forty-two".