121221120002 has 16 divisors (see below), whose sum is σ = 190019060352. Its totient is φ = 57941414160.

The previous prime is 121221119947. The next prime is 121221120011. The reversal of 121221120002 is 200021122121.

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, 14991149 + ... + 14999232.

It is an arithmetic number, because the mean of its divisors is an integer number (11876191272).

Almost surely, 2^121221120002 is an apocalyptic number.

121221120002 is a deficient number, since it is larger than the sum of its proper divisors (68797940350).

121221120002 is a wasteful number, since it uses less digits than its factorization.

121221120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29990473.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121221120002 its reverse (200021122121), we get a palindrome (321242242123).

The spelling of 121221120002 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty thousand, two".