21141201 has 8 divisors (see below), whose sum is σ = 28218240. Its totient is φ = 14079152.

The previous prime is 21141161. The next prime is 21141227. The reversal of 21141201 is 10214112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21141201 - 2⁶ = 21141137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21141271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115 + ... + 6503.

It is an arithmetic number, because the mean of its divisors is an integer number (3527280).

Almost surely, 2^21141201 is an apocalyptic number.

It is an amenable number.

21141201 is a deficient number, since it is larger than the sum of its proper divisors (7077039).

21141201 is a wasteful number, since it uses less digits than its factorization.

21141201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7495.

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

The square root of 21141201 is about 4597.9561763897. The cubic root of 21141201 is about 276.5093906190.

Adding to 21141201 its reverse (10214112), we get a palindrome (31355313).

The spelling of 21141201 in words is "twenty-one million, one hundred forty-one thousand, two hundred one".