21201002220201 has 32 divisors (see below), whose sum is σ = 28585840281600. Its totient is φ = 13975995280896.

The previous prime is 21201002220193. The next prime is 21201002220239. The reversal of 21201002220201 is 10202220010212.

It is not a de Polignac number, because 21201002220201 - 2³ = 21201002220193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21201002230201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583918890 + ... + 583955196.

It is an arithmetic number, because the mean of its divisors is an integer number (893307508800).

Almost surely, 2^{21201002220201} is an apocalyptic number.

It is an amenable number.

21201002220201 is a deficient number, since it is larger than the sum of its proper divisors (7384838061399).

21201002220201 is a wasteful number, since it uses less digits than its factorization.

21201002220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42533.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21201002220201 its reverse (10202220010212), we get a palindrome (31403222230413).

The spelling of 21201002220201 in words is "twenty-one trillion, two hundred one billion, two million, two hundred twenty thousand, two hundred one".