121001650 has 96 divisors (see below), whose sum is σ = 286374528. Its totient is φ = 36940800.

The previous prime is 121001623. The next prime is 121001653. The reversal of 121001650 is 56100121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121001653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203754 + ... + 204346.

It is an arithmetic number, because the mean of its divisors is an integer number (2983068).

Almost surely, 2^121001650 is an apocalyptic number.

121001650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001650 is an abundant number, since it is smaller than the sum of its proper divisors (165372878).

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

121001650 is a wasteful number, since it uses less digits than its factorization.

121001650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121001650 is about 11000.0749997443. The cubic root of 121001650 is about 494.6109925362.

Adding to 121001650 its reverse (56100121), we get a palindrome (177101771).

The spelling of 121001650 in words is "one hundred twenty-one million, one thousand, six hundred fifty".