21046011 has 8 divisors (see below), whose sum is σ = 32070144. Its totient is φ = 12026280.

The previous prime is 21046009. The next prime is 21046021. The reversal of 21046011 is 11064012.

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

It is not a de Polignac number, because 21046011 - 2¹ = 21046009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21046001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501075 + ... + 501116.

It is an arithmetic number, because the mean of its divisors is an integer number (4008768).

Almost surely, 2^21046011 is an apocalyptic number.

21046011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21046011 is a deficient number, since it is larger than the sum of its proper divisors (11024133).

21046011 is a wasteful number, since it uses less digits than its factorization.

21046011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002201.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 21046011 is about 4587.5931598170. The cubic root of 21046011 is about 276.0937640886.

The spelling of 21046011 in words is "twenty-one million, forty-six thousand, eleven".