21221110010201 has 8 divisors (see below), whose sum is σ = 21532789795008. Its totient is φ = 20911421790000.

The previous prime is 21221110010171. The next prime is 21221110010251. The reversal of 21221110010201 is 10201001112212.

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 21221110010201 - 2⁶ = 21221110010137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21221110010251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497869685 + ... + 497912306.

It is an arithmetic number, because the mean of its divisors is an integer number (2691598724376).

Almost surely, 2^{21221110010201} is an apocalyptic number.

It is an amenable number.

21221110010201 is a deficient number, since it is larger than the sum of its proper divisors (311679784807).

21221110010201 is a wasteful number, since it uses less digits than its factorization.

21221110010201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995782303.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21221110010201 its reverse (10201001112212), we get a palindrome (31422111122413).

The spelling of 21221110010201 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred ten million, ten thousand, two hundred one".