121221222002002 has 16 divisors (see below), whose sum is σ = 182126354518080. Its totient is φ = 60512449311792.

The previous prime is 121221222001973. The next prime is 121221222002009. The reversal of 121221222002002 is 200200222122121.

It is not an unprimeable number, because it can be changed into a prime (121221222002009) 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 7 ways as a sum of consecutive naturals, for example, 16979688 + ... + 23038060.

It is an arithmetic number, because the mean of its divisors is an integer number (11382897157380).

Almost surely, 2^{121221222002002} is an apocalyptic number.

121221222002002 is a deficient number, since it is larger than the sum of its proper divisors (60905132516078).

121221222002002 is a wasteful number, since it uses less digits than its factorization.

121221222002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074577.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121221222002002 its reverse (200200222122121), we get a palindrome (321421444124123).

The spelling of 121221222002002 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty-two million, two thousand, two".