121819733 has 12 divisors (see below), whose sum is σ = 145167372. Its totient is φ = 101868480.

The previous prime is 121819727. The next prime is 121819751. The reversal of 121819733 is 337918121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68923204 + 52896529 = 8302^2 + 7273^2 .

It is not a de Polignac number, because 121819733 - 2⁴ = 121819717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121819693 and 121819702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121819793) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 28310 + ... + 32327.

It is an arithmetic number, because the mean of its divisors is an integer number (12097281).

Almost surely, 2^121819733 is an apocalyptic number.

It is an amenable number.

121819733 is a deficient number, since it is larger than the sum of its proper divisors (23347639).

121819733 is an equidigital number, since it uses as much as digits as its factorization.

121819733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60692 (or 60685 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 121819733 is about 11037.1976968794. The cubic root of 121819733 is about 495.7231656816.

The spelling of 121819733 in words is "one hundred twenty-one million, eight hundred nineteen thousand, seven hundred thirty-three".