121242221102 has 8 divisors (see below), whose sum is σ = 182057425536. Its totient is φ = 60556412592.

The previous prime is 121242221071. The next prime is 121242221123. The reversal of 121242221102 is 201122242121.

It is a happy number.

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, 32346638 + ... + 32350385.

It is an arithmetic number, because the mean of its divisors is an integer number (22757178192).

Almost surely, 2^121242221102 is an apocalyptic number.

121242221102 is a deficient number, since it is larger than the sum of its proper divisors (60815204434).

121242221102 is an equidigital number, since it uses as much as digits as its factorization.

121242221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64697962.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121242221102 its reverse (201122242121), we get a palindrome (322364463223).

The spelling of 121242221102 in words is "one hundred twenty-one billion, two hundred forty-two million, two hundred twenty-one thousand, one hundred two".