21941083 has 4 divisors (see below), whose sum is σ = 21954640. Its totient is φ = 21927528.

The previous prime is 21941053. The next prime is 21941113. The reversal of 21941083 is 38014912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21941053) and next prime (21941113).

It is a cyclic number.

It is not a de Polignac number, because 21941083 - 2¹⁷ = 21810011 is a prime.

It is a super-2 number, since 2×21941083² = 962822246425778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21941053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3960 + ... + 7717.

It is an arithmetic number, because the mean of its divisors is an integer number (5488660).

Almost surely, 2^21941083 is an apocalyptic number.

21941083 is a deficient number, since it is larger than the sum of its proper divisors (13557).

21941083 is a wasteful number, since it uses less digits than its factorization.

21941083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13556.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 21941083 is about 4684.1309759656. The cubic root of 21941083 is about 279.9535764872.

Adding to 21941083 its reverse (38014912), we get a palindrome (59955995).

The spelling of 21941083 in words is "twenty-one million, nine hundred forty-one thousand, eighty-three".