11198421 has 12 divisors (see below), whose sum is σ = 17419948. Its totient is φ = 6891264.

The previous prime is 11198417. The next prime is 11198431. The reversal of 11198421 is 12489111.

It can be written as a sum of positive squares in 2 ways, for example, as 3663396 + 7535025 = 1914^2 + 2745^2 .

It is not a de Polignac number, because 11198421 - 2² = 11198417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11198431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47740 + ... + 47973.

Almost surely, 2^11198421 is an apocalyptic number.

It is an amenable number.

11198421 is a deficient number, since it is larger than the sum of its proper divisors (6221527).

11198421 is a wasteful number, since it uses less digits than its factorization.

11198421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95732 (or 95729 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 11198421 is about 3346.4041895742. The cubic root of 11198421 is about 223.7272735778.

The spelling of 11198421 in words is "eleven million, one hundred ninety-eight thousand, four hundred twenty-one".