121221130204 has 12 divisors (see below), whose sum is σ = 212142632800. Its totient is φ = 60608949408.

The previous prime is 121221130153. The next prime is 121221130211. The reversal of 121221130204 is 402031122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226449 + ... + 541960.

Almost surely, 2^121221130204 is an apocalyptic number.

It is an amenable number.

121221130204 is a deficient number, since it is larger than the sum of its proper divisors (90921502596).

121221130204 is a wasteful number, since it uses less digits than its factorization.

121221130204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807852 (or 807850 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121221130204 its reverse (402031122121), we get a palindrome (523252252325).

The spelling of 121221130204 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty thousand, two hundred four".