121121221002 has 32 divisors (see below), whose sum is σ = 262747908864. Its totient is φ = 37072012800.

The previous prime is 121121220953. The next prime is 121121221003. The reversal of 121121221002 is 200122121121.

It is not an unprimeable number, because it can be changed into a prime (121121221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14477074 + ... + 14485437.

It is an arithmetic number, because the mean of its divisors is an integer number (8210872152).

Almost surely, 2^121121221002 is an apocalyptic number.

121121221002 is an abundant number, since it is smaller than the sum of its proper divisors (141626687862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121121221002 is a wasteful number, since it uses less digits than its factorization.

121121221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28962574.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121121221002 its reverse (200122121121), we get a palindrome (321243342123).

The spelling of 121121221002 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, two".