121221211102 has 16 divisors (see below), whose sum is σ = 182385192240. Its totient is φ = 60426203968.

The previous prime is 121221211091. The next prime is 121221211121. The reversal of 121221211102 is 201112122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6414924 + ... + 6433792.

It is an arithmetic number, because the mean of its divisors is an integer number (11399074515).

Almost surely, 2^121221211102 is an apocalyptic number.

121221211102 is a deficient number, since it is larger than the sum of its proper divisors (61163981138).

121221211102 is a wasteful number, since it uses less digits than its factorization.

121221211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28475.

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

Adding to 121221211102 its reverse (201112122121), we get a palindrome (322333333223).

The spelling of 121221211102 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred two".