121201012004 has 24 divisors (see below), whose sum is σ = 217295076600. Its totient is φ = 59116977920.

The previous prime is 121201012003. The next prime is 121201012063. The reversal of 121201012004 is 400210102121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 341880100 + 120859131904 = 18490^2 + 347648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121201012004.

It is not an unprimeable number, because it can be changed into a prime (121201012003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181482 + ... + 2236350.

It is an arithmetic number, because the mean of its divisors is an integer number (9053961525).

Almost surely, 2^121201012004 is an apocalyptic number.

It is an amenable number.

121201012004 is a deficient number, since it is larger than the sum of its proper divisors (96094064596).

121201012004 is a wasteful number, since it uses less digits than its factorization.

121201012004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68383 (or 68381 counting only the distinct ones).

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

Adding to 121201012004 its reverse (400210102121), we get a palindrome (521411114125).

The spelling of 121201012004 in words is "one hundred twenty-one billion, two hundred one million, twelve thousand, four".