221201121102 has 16 divisors (see below), whose sum is σ = 476433184080. Its totient is φ = 68061883392.

The previous prime is 221201121091. The next prime is 221201121103. The reversal of 221201121102 is 201121102122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201121103) 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, 1417955827 + ... + 1417955982.

It is an arithmetic number, because the mean of its divisors is an integer number (29777074005).

Almost surely, 2^221201121102 is an apocalyptic number.

221201121102 is an abundant number, since it is smaller than the sum of its proper divisors (255232062978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221201121102 is a wasteful number, since it uses less digits than its factorization.

221201121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835911827.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221201121102 its reverse (201121102122), we get a palindrome (422322223224).

The spelling of 221201121102 in words is "two hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, one hundred two".