221012220201 has 8 divisors (see below), whose sum is σ = 294733091424. Its totient is φ = 147316414560.

The previous prime is 221012220181. The next prime is 221012220203. The reversal of 221012220201 is 102022210122.

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

It is not a de Polignac number, because 221012220201 - 2¹⁵ = 221012187433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221012220203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6245811 + ... + 6281096.

It is an arithmetic number, because the mean of its divisors is an integer number (36841636428).

Almost surely, 2^221012220201 is an apocalyptic number.

It is an amenable number.

221012220201 is a deficient number, since it is larger than the sum of its proper divisors (73720871223).

221012220201 is a wasteful number, since it uses less digits than its factorization.

221012220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12532791.

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

Adding to 221012220201 its reverse (102022210122), we get a palindrome (323034430323).

The spelling of 221012220201 in words is "two hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred one".