221121211102 has 8 divisors (see below), whose sum is σ = 361834709112. Its totient is φ = 100509641400.

The previous prime is 221121211081. The next prime is 221121211117. The reversal of 221121211102 is 201112121122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025482049 + ... + 5025482092.

It is an arithmetic number, because the mean of its divisors is an integer number (45229338639).

Almost surely, 2^221121211102 is an apocalyptic number.

221121211102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221121211102 is a deficient number, since it is larger than the sum of its proper divisors (140713498010).

221121211102 is a wasteful number, since it uses less digits than its factorization.

221121211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050964154.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221121211102 its reverse (201112121122), we get a palindrome (422233332224).

The spelling of 221121211102 in words is "two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred two".