221201012110 has 32 divisors (see below), whose sum is σ = 428967669312. Its totient is φ = 81640312320.

The previous prime is 221201012093. The next prime is 221201012129. The reversal of 221201012110 is 11210102122.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37786 + ... + 666205.

It is an arithmetic number, because the mean of its divisors is an integer number (13405239666).

Almost surely, 2^221201012110 is an apocalyptic number.

221201012110 is a deficient number, since it is larger than the sum of its proper divisors (207766657202).

221201012110 is a wasteful number, since it uses less digits than its factorization.

221201012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706428.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221201012110 its reverse (11210102122), we get a palindrome (232411114232).

The spelling of 221201012110 in words is "two hundred twenty-one billion, two hundred one million, twelve thousand, one hundred ten".