221101110102 has 16 divisors (see below), whose sum is σ = 446580461232. Its totient is φ = 72970663200.

The previous prime is 221101110079. The next prime is 221101110107. The reversal of 221101110102 is 201011101122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101110107) 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, 182426053 + ... + 182427264.

It is an arithmetic number, because the mean of its divisors is an integer number (27911278827).

Almost surely, 2^221101110102 is an apocalyptic number.

221101110102 is an abundant number, since it is smaller than the sum of its proper divisors (225479351130).

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

221101110102 is a wasteful number, since it uses less digits than its factorization.

221101110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364853423.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221101110102 its reverse (201011101122), we get a palindrome (422112211224).

The spelling of 221101110102 in words is "two hundred twenty-one billion, one hundred one million, one hundred ten thousand, one hundred two".