121220229 has 16 divisors (see below), whose sum is σ = 174384000. Its totient is φ = 74458176.

The previous prime is 121220213. The next prime is 121220243. The reversal of 121220229 is 922022121.

It is a happy number.

It is not a de Polignac number, because 121220229 - 2⁴ = 121220213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20767 + ... + 25955.

It is an arithmetic number, because the mean of its divisors is an integer number (10899000).

Almost surely, 2^121220229 is an apocalyptic number.

It is an amenable number.

121220229 is a deficient number, since it is larger than the sum of its proper divisors (53163771).

121220229 is a wasteful number, since it uses less digits than its factorization.

121220229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 121220229 is about 11010.0058583091. The cubic root of 121220229 is about 494.9086373571.

The spelling of 121220229 in words is "one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-nine".