121121222002 has 32 divisors (see below), whose sum is σ = 209260396800. Its totient is φ = 51999829200.

The previous prime is 121121221993. The next prime is 121121222003. The reversal of 121121222002 is 200222121121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121121222003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299352 + ... + 576067.

It is an arithmetic number, because the mean of its divisors is an integer number (6539387400).

Almost surely, 2^121121222002 is an apocalyptic number.

121121222002 is a deficient number, since it is larger than the sum of its proper divisors (88139174798).

121121222002 is a wasteful number, since it uses less digits than its factorization.

121121222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875782.

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

Adding to 121121222002 its reverse (200222121121), we get a palindrome (321343343123).

The spelling of 121121222002 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-two thousand, two".