11220421042 has 8 divisors (see below), whose sum is σ = 16847315100. Its totient is φ = 5604649344.

The previous prime is 11220421031. The next prime is 11220421067. The reversal of 11220421042 is 24012402211.

It can be written as a sum of positive squares in 2 ways, for example, as 9011515041 + 2208906001 = 94929^2 + 46999^2 .

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, 2778067 + ... + 2782102.

Almost surely, 2^11220421042 is an apocalyptic number.

11220421042 is a deficient number, since it is larger than the sum of its proper divisors (5626894058).

11220421042 is a wasteful number, since it uses less digits than its factorization.

11220421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561180.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 11220421042 its reverse (24012402211), we get a palindrome (35232823253).

The spelling of 11220421042 in words is "eleven billion, two hundred twenty million, four hundred twenty-one thousand, forty-two".