121220003 has 8 divisors (see below), whose sum is σ = 124566528. Its totient is φ = 117905544.

The previous prime is 121219999. The next prime is 121220017. The reversal of 121220003 is 300022121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121220003 - 2² = 121219999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121220023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 15572.

It is an arithmetic number, because the mean of its divisors is an integer number (15570816).

Almost surely, 2^121220003 is an apocalyptic number.

121220003 is a deficient number, since it is larger than the sum of its proper divisors (3346525).

121220003 is a wasteful number, since it uses less digits than its factorization.

121220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16033.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121220003 is about 11009.9955949128. The cubic root of 121220003 is about 494.9083297918.

Adding to 121220003 its reverse (300022121), we get a palindrome (421242124).

The spelling of 121220003 in words is "one hundred twenty-one million, two hundred twenty thousand, three".