21412011 has 16 divisors (see below), whose sum is σ = 30599424. Its totient is φ = 13283424.

The previous prime is 21411983. The next prime is 21412021. The reversal of 21412011 is 11021412.

It is a happy number.

It is not a de Polignac number, because 21412011 - 2⁷ = 21411883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21412021) 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 15 ways as a sum of consecutive naturals, for example, 1641 + ... + 6746.

It is an arithmetic number, because the mean of its divisors is an integer number (1912464).

Almost surely, 2^21412011 is an apocalyptic number.

21412011 is a deficient number, since it is larger than the sum of its proper divisors (9187413).

21412011 is a wasteful number, since it uses less digits than its factorization.

21412011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 21412011 is about 4627.3114224137. The cubic root of 21412011 is about 277.6850417487.

Adding to 21412011 its reverse (11021412), we get a palindrome (32433423).

The spelling of 21412011 in words is "twenty-one million, four hundred twelve thousand, eleven".