21141411 has 16 divisors (see below), whose sum is σ = 29598720. Its totient is φ = 13404960.

The previous prime is 21141403. The next prime is 21141431. The reversal of 21141411 is 11414112.

It is not a de Polignac number, because 21141411 - 2³ = 21141403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21141431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3561 + ... + 7413.

It is an arithmetic number, because the mean of its divisors is an integer number (1849920).

Almost surely, 2^21141411 is an apocalyptic number.

21141411 is a deficient number, since it is larger than the sum of its proper divisors (8457309).

21141411 is a wasteful number, since it uses less digits than its factorization.

21141411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its digits is 32, while the sum is 15.

The square root of 21141411 is about 4597.9790125663. The cubic root of 21141411 is about 276.5103061579.

Adding to 21141411 its reverse (11414112), we get a palindrome (32555523).

It can be divided in two parts, 2 and 1141411, that multiplied together give a palindrome (2282822).

The spelling of 21141411 in words is "twenty-one million, one hundred forty-one thousand, four hundred eleven".