21141101 has 4 divisors (see below), whose sum is σ = 21823104. Its totient is φ = 20459100.

The previous prime is 21141089. The next prime is 21141103. The reversal of 21141101 is 10114112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21141101 - 2⁶ = 21141037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141103) 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, 340955 + ... + 341016.

It is an arithmetic number, because the mean of its divisors is an integer number (5455776).

Almost surely, 2^21141101 is an apocalyptic number.

It is an amenable number.

21141101 is a deficient number, since it is larger than the sum of its proper divisors (682003).

21141101 is an equidigital number, since it uses as much as digits as its factorization.

21141101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682002.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 21141101 is about 4597.9453019800. The cubic root of 21141101 is about 276.5089546459.

Adding to 21141101 its reverse (10114112), we get a palindrome (31255213).

The spelling of 21141101 in words is "twenty-one million, one hundred forty-one thousand, one hundred one".