121213403204 has 12 divisors (see below), whose sum is σ = 214808563200. Its totient is φ = 59839528008.

The previous prime is 121213403203. The next prime is 121213403209. The reversal of 121213403204 is 402304312121.

It is a self number, because there is not a number n which added to its sum of digits gives 121213403204.

It is not an unprimeable number, because it can be changed into a prime (121213403203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191793044 + ... + 191793675.

It is an arithmetic number, because the mean of its divisors is an integer number (17900713600).

Almost surely, 2^121213403204 is an apocalyptic number.

It is an amenable number.

121213403204 is a deficient number, since it is larger than the sum of its proper divisors (93595159996).

121213403204 is a wasteful number, since it uses less digits than its factorization.

121213403204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383586802 (or 383586800 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 121213403204 its reverse (402304312121), we get a palindrome (523517715325).

The spelling of 121213403204 in words is "one hundred twenty-one billion, two hundred thirteen million, four hundred three thousand, two hundred four".