121005353 has 6 divisors (see below), whose sum is σ = 140761386. Its totient is φ = 103718832.

The previous prime is 121005349. The next prime is 121005383. The reversal of 121005353 is 353500121.

It can be written as a sum of positive squares in only one way, i.e., 81667369 + 39337984 = 9037^2 + 6272^2 .

It is not a de Polignac number, because 121005353 - 2² = 121005349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121005383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1234700 + ... + 1234797.

It is an arithmetic number, because the mean of its divisors is an integer number (23460231).

Almost surely, 2^121005353 is an apocalyptic number.

It is an amenable number.

121005353 is a deficient number, since it is larger than the sum of its proper divisors (19756033).

121005353 is an equidigital number, since it uses as much as digits as its factorization.

121005353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469511 (or 2469504 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 121005353 is about 11000.2433154908. The cubic root of 121005353 is about 494.6160379931.

Adding to 121005353 its reverse (353500121), we get a palindrome (474505474).

The spelling of 121005353 in words is "one hundred twenty-one million, five thousand, three hundred fifty-three".