121400012 has 12 divisors (see below), whose sum is σ = 212649360. Its totient is φ = 60643056.

The previous prime is 121399991. The next prime is 121400017. The reversal of 121400012 is 210004121.

It is a junction number, because it is equal to n+sod(n) for n = 121399966 and 121400002.

It is not an unprimeable number, because it can be changed into a prime (121400017) 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, 9248 + ... + 18119.

It is an arithmetic number, because the mean of its divisors is an integer number (17720780).

Almost surely, 2^121400012 is an apocalyptic number.

It is an amenable number.

121400012 is a deficient number, since it is larger than the sum of its proper divisors (91249348).

121400012 is a wasteful number, since it uses less digits than its factorization.

121400012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28480 (or 28478 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121400012 is about 11018.1673612266. The cubic root of 121400012 is about 495.1531845732.

Adding to 121400012 its reverse (210004121), we get a palindrome (331404133).

The spelling of 121400012 in words is "one hundred twenty-one million, four hundred thousand, twelve".