21221121000201 has 8 divisors (see below), whose sum is σ = 28299392443200. Its totient is φ = 14145131778672.

The previous prime is 21221121000181. The next prime is 21221121000257. The reversal of 21221121000201 is 10200012112212.

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

It is not a de Polignac number, because 21221121000201 - 2¹³ = 21221120992009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21221121000271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570533670 + ... + 570570863.

It is an arithmetic number, because the mean of its divisors is an integer number (3537424055400).

Almost surely, 2^{21221121000201} is an apocalyptic number.

It is an amenable number.

21221121000201 is a deficient number, since it is larger than the sum of its proper divisors (7078271442999).

21221121000201 is a wasteful number, since it uses less digits than its factorization.

21221121000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141110735.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21221121000201 its reverse (10200012112212), we get a palindrome (31421133112413).

The spelling of 21221121000201 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred one", and thus it is an aban number.