121220200012 has 12 divisors (see below), whose sum is σ = 212393114416. Its totient is φ = 60536453040.

The previous prime is 121220199953. The next prime is 121220200027. The reversal of 121220200012 is 210002022121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121220199965 and 121220200001.

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, 18408039 + ... + 18414622.

Almost surely, 2^121220200012 is an apocalyptic number.

It is an amenable number.

121220200012 is a deficient number, since it is larger than the sum of its proper divisors (91172914404).

121220200012 is a wasteful number, since it uses less digits than its factorization.

121220200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36823488 (or 36823486 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121220200012 its reverse (210002022121), we get a palindrome (331222222133).

The spelling of 121220200012 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred thousand, twelve".