121121007 has 16 divisors (see below), whose sum is σ = 185099520. Its totient is φ = 69011712.

The previous prime is 121121003. The next prime is 121121083. The reversal of 121121007 is 700121121.

It is not a de Polignac number, because 121121007 - 2² = 121121003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121003) 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, 757 + ... + 15582.

It is an arithmetic number, because the mean of its divisors is an integer number (11568720).

Almost surely, 2^121121007 is an apocalyptic number.

121121007 is a deficient number, since it is larger than the sum of its proper divisors (63978513).

121121007 is a wasteful number, since it uses less digits than its factorization.

121121007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16702.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 121121007 is about 11005.4989437099. The cubic root of 121121007 is about 494.7735685119.

Adding to 121121007 its reverse (700121121), we get a palindrome (821242128).

The spelling of 121121007 in words is "one hundred twenty-one million, one hundred twenty-one thousand, seven".