121221032 has 16 divisors (see below), whose sum is σ = 227888640. Its totient is φ = 60450736.

The previous prime is 121221031. The next prime is 121221041. The reversal of 121221032 is 230122121.

It is a happy number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 121220998 and 121221016.

It is not an unprimeable number, because it can be changed into a prime (121221031) 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, 16718 + ... + 22845.

It is an arithmetic number, because the mean of its divisors is an integer number (14243040).

Almost surely, 2^121221032 is an apocalyptic number.

It is an amenable number.

121221032 is a deficient number, since it is larger than the sum of its proper divisors (106667608).

121221032 is a wasteful number, since it uses less digits than its factorization.

121221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39952 (or 39948 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121221032 is about 11010.0423250776. The cubic root of 121221032 is about 494.9097301636.

Adding to 121221032 its reverse (230122121), we get a palindrome (351343153).

The spelling of 121221032 in words is "one hundred twenty-one million, two hundred twenty-one thousand, thirty-two".