121200412 has 36 divisors (see below), whose sum is σ = 228795840. Its totient is φ = 55983360.

The previous prime is 121200407. The next prime is 121200413. The reversal of 121200412 is 214002121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121200392 and 121200401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252789 + ... + 253267.

It is an arithmetic number, because the mean of its divisors is an integer number (6355440).

Almost surely, 2^121200412 is an apocalyptic number.

It is an amenable number.

121200412 is a deficient number, since it is larger than the sum of its proper divisors (107595428).

121200412 is a wasteful number, since it uses less digits than its factorization.

121200412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 559 counting only the distinct ones).

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

The square root of 121200412 is about 11009.1058674172. The cubic root of 121200412 is about 494.8816667790.

Adding to 121200412 its reverse (214002121), we get a palindrome (335202533).

The spelling of 121200412 in words is "one hundred twenty-one million, two hundred thousand, four hundred twelve".