221020002201 has 32 divisors (see below), whose sum is σ = 314667819648. Its totient is φ = 137779868160.

The previous prime is 221020002163. The next prime is 221020002209. The reversal of 221020002201 is 102200020122.

It is not a de Polignac number, because 221020002201 - 2⁹ = 221020001689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221020002209) 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, 57510 + ... + 667343.

It is an arithmetic number, because the mean of its divisors is an integer number (9833369364).

Almost surely, 2^221020002201 is an apocalyptic number.

It is an amenable number.

221020002201 is a deficient number, since it is larger than the sum of its proper divisors (93647817447).

221020002201 is a wasteful number, since it uses less digits than its factorization.

221020002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725001.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221020002201 its reverse (102200020122), we get a palindrome (323220022323).

The spelling of 221020002201 in words is "two hundred twenty-one billion, twenty million, two thousand, two hundred one".