121221235 has 8 divisors (see below), whose sum is σ = 153121680. Its totient is φ = 91872864.

The previous prime is 121221227. The next prime is 121221241. The reversal of 121221235 is 532122121.

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 121221235 - 2³ = 121221227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637912 + ... + 638101.

It is an arithmetic number, because the mean of its divisors is an integer number (19140210).

Almost surely, 2^121221235 is an apocalyptic number.

121221235 is a deficient number, since it is larger than the sum of its proper divisors (31900445).

121221235 is a wasteful number, since it uses less digits than its factorization.

121221235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276037.

The product of its digits is 240, while the sum is 19.

The square root of 121221235 is about 11010.0515439302. The cubic root of 121221235 is about 494.9100064265.

Adding to 121221235 its reverse (532122121), we get a palindrome (653343356).

The spelling of 121221235 in words is "one hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-five".