11221340421 has 8 divisors (see below), whose sum is σ = 14968719424. Its totient is φ = 7477427520.

The previous prime is 11221340419. The next prime is 11221340423. The reversal of 11221340421 is 12404312211.

It is an interprime number because it is at equal distance from previous prime (11221340419) and next prime (11221340423).

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

It is not a de Polignac number, because 11221340421 - 2¹ = 11221340419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221340423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858961 + ... + 871926.

It is an arithmetic number, because the mean of its divisors is an integer number (1871089928).

Almost surely, 2^11221340421 is an apocalyptic number.

It is an amenable number.

11221340421 is a deficient number, since it is larger than the sum of its proper divisors (3747379003).

11221340421 is a wasteful number, since it uses less digits than its factorization.

11221340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733051.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11221340421 its reverse (12404312211), we get a palindrome (23625652632).

The spelling of 11221340421 in words is "eleven billion, two hundred twenty-one million, three hundred forty thousand, four hundred twenty-one".