121121032004 has 18 divisors (see below), whose sum is σ = 246567815550. Its totient is φ = 51909013632.

The previous prime is 121121031971. The next prime is 121121032007. The reversal of 121121032004 is 400230121121.

It can be written as a sum of positive squares in only one way, i.e., 76785518404 + 44335513600 = 277102^2 + 210560^2 .

It is not an unprimeable number, because it can be changed into a prime (121121032007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308982029 + ... + 308982420.

It is an arithmetic number, because the mean of its divisors is an integer number (13698211975).

Almost surely, 2^121121032004 is an apocalyptic number.

121121032004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121121032004 is an abundant number, since it is smaller than the sum of its proper divisors (125446783546).

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

121121032004 is a wasteful number, since it uses less digits than its factorization.

121121032004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617964467 (or 617964458 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121121032004 its reverse (400230121121), we get a palindrome (521351153125).

The spelling of 121121032004 in words is "one hundred twenty-one billion, one hundred twenty-one million, thirty-two thousand, four".