221121101102 has 32 divisors (see below), whose sum is σ = 364109866848. Its totient is φ = 99878400000.

The previous prime is 221121101077. The next prime is 221121101119. The reversal of 221121101102 is 201101121122.

It is a super-2 number, since 2×221121101102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5399102 + ... + 5439902.

It is an arithmetic number, because the mean of its divisors is an integer number (11378433339).

Almost surely, 2^221121101102 is an apocalyptic number.

221121101102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221121101102 is a deficient number, since it is larger than the sum of its proper divisors (142988765746).

221121101102 is a wasteful number, since it uses less digits than its factorization.

221121101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42356.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221121101102 its reverse (201101121122), we get a palindrome (422222222224).

It can be divided in two parts, 221121 and 101102, that added together give a palindrome (322223).

The spelling of 221121101102 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred two".