11207421 has 12 divisors (see below), whose sum is σ = 16417440. Its totient is φ = 7365960.

The previous prime is 11207419. The next prime is 11207429. The reversal of 11207421 is 12470211.

11207421 = T₅₂₆ + T₅₂₇ + ... + T₅₉₆.

It is not a de Polignac number, because 11207421 - 2¹ = 11207419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11207394 and 11207403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11207429) 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 11 ways as a sum of consecutive naturals, for example, 8131 + ... + 9408.

It is an arithmetic number, because the mean of its divisors is an integer number (1368120).

Almost surely, 2^11207421 is an apocalyptic number.

It is an amenable number.

11207421 is a deficient number, since it is larger than the sum of its proper divisors (5210019).

11207421 is a wasteful number, since it uses less digits than its factorization.

11207421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616 (or 17613 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 11207421 is about 3347.7486464787. The cubic root of 11207421 is about 223.7871929267.

Adding to 11207421 its reverse (12470211), we get a palindrome (23677632).

It can be divided in two parts, 11207 and 421, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 11207421 in words is "eleven million, two hundred seven thousand, four hundred twenty-one".