121222102102 has 16 divisors (see below), whose sum is σ = 185029005312. Its totient is φ = 59550491880.

The previous prime is 121222102097. The next prime is 121222102109. The reversal of 121222102102 is 201201222121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222102109) 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, 1129674 + ... + 1232317.

It is an arithmetic number, because the mean of its divisors is an integer number (11564312832).

Almost surely, 2^121222102102 is an apocalyptic number.

121222102102 is a deficient number, since it is larger than the sum of its proper divisors (63806903210).

121222102102 is a wasteful number, since it uses less digits than its factorization.

121222102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362443.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121222102102 its reverse (201201222121), we get a palindrome (322423324223).

The spelling of 121222102102 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred two thousand, one hundred two".