21214201541 has 8 divisors (see below), whose sum is σ = 23167839744. Its totient is φ = 19306531440.

The previous prime is 21214201531. The next prime is 21214201543. The reversal of 21214201541 is 14510241212.

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 21214201541 - 2¹⁰ = 21214200517 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 (21214201543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11491061 + ... + 11492906.

It is an arithmetic number, because the mean of its divisors is an integer number (2895979968).

Almost surely, 2^21214201541 is an apocalyptic number.

It is an amenable number.

21214201541 is a deficient number, since it is larger than the sum of its proper divisors (1953638203).

21214201541 is a wasteful number, since it uses less digits than its factorization.

21214201541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22984051.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 21214201541 its reverse (14510241212), we get a palindrome (35724442753).

The spelling of 21214201541 in words is "twenty-one billion, two hundred fourteen million, two hundred one thousand, five hundred forty-one".