221201000201005 has 32 divisors (see below), whose sum is σ = 293542273543680. Its totient is φ = 158667918266880.

The previous prime is 221201000200991. The next prime is 221201000201039. The reversal of 221201000201005 is 500102000102122.

It is a happy number.

It is not a de Polignac number, because 221201000201005 - 2¹³ = 221201000192813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221201000201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429560476 + ... + 430075114.

It is an arithmetic number, because the mean of its divisors is an integer number (9173196048240).

Almost surely, 2^{221201000201005} is an apocalyptic number.

It is an amenable number.

221201000201005 is a deficient number, since it is larger than the sum of its proper divisors (72341273342675).

221201000201005 is a wasteful number, since it uses less digits than its factorization.

221201000201005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621781.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 221201000201005 its reverse (500102000102122), we get a palindrome (721303000303127).

The spelling of 221201000201005 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred one thousand, five".