121213201996 has 12 divisors (see below), whose sum is σ = 212126800648. Its totient is φ = 60605544672.

The previous prime is 121213201981. The next prime is 121213201997. The reversal of 121213201996 is 699102312121.

It is not an unprimeable number, because it can be changed into a prime (121213201997) 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, 30655 + ... + 493321.

Almost surely, 2^121213201996 is an apocalyptic number.

It is an amenable number.

121213201996 is a deficient number, since it is larger than the sum of its proper divisors (90913598652).

121213201996 is a wasteful number, since it uses less digits than its factorization.

121213201996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528168 (or 528166 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 121213201996 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred one thousand, nine hundred ninety-six".