121121016 has 64 divisors (see below), whose sum is σ = 309290400. Its totient is φ = 39518208.

The previous prime is 121121003. The next prime is 121121083. The reversal of 121121016 is 610121121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121120986 and 121121004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450130 + ... + 450398.

Almost surely, 2^121121016 is an apocalyptic number.

It is an amenable number.

121121016 is an abundant number, since it is smaller than the sum of its proper divisors (188169384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121121016 is a wasteful number, since it uses less digits than its factorization.

121121016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 121121016 is about 11005.4993525964. The cubic root of 121121016 is about 494.7735807667.

Adding to 121121016 its reverse (610121121), we get a palindrome (731242137).

The spelling of 121121016 in words is "one hundred twenty-one million, one hundred twenty-one thousand, sixteen".