121044005 has 8 divisors (see below), whose sum is σ = 146885400. Its totient is φ = 95746816.

The previous prime is 121043981. The next prime is 121044031. The reversal of 121044005 is 500440121.

It is a Cunningham number, because it is equal to 11002²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 121044004 = 1^2 + 11002^2 .

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 121044005 - 2¹² = 121039909 is a prime.

It is a super-2 number, since 2×121044005² = 29303302292880050, which contains 22 as substring.

It is a congruent number.

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, 135560 + ... + 136449.

It is an arithmetic number, because the mean of its divisors is an integer number (18360675).

Almost surely, 2^121044005 is an apocalyptic number.

It is an amenable number.

121044005 is a deficient number, since it is larger than the sum of its proper divisors (25841395).

121044005 is an equidigital number, since it uses as much as digits as its factorization.

121044005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272103.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121044005 is about 11002.0000454463. Note that the first 4 decimals coincide. The cubic root of 121044005 is about 494.6686964456.

Adding to 121044005 its reverse (500440121), we get a palindrome (621484126).

The spelling of 121044005 in words is "one hundred twenty-one million, forty-four thousand, five".