1020121433 has 4 divisors (see below), whose sum is σ = 1053028608. Its totient is φ = 987214260.

The previous prime is 1020121411. The next prime is 1020121439. The reversal of 1020121433 is 3341210201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020121433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020121439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16453541 + ... + 16453602.

It is an arithmetic number, because the mean of its divisors is an integer number (263257152).

Almost surely, 2^1020121433 is an apocalyptic number.

It is an amenable number.

1020121433 is a deficient number, since it is larger than the sum of its proper divisors (32907175).

1020121433 is an equidigital number, since it uses as much as digits as its factorization.

1020121433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32907174.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1020121433 is about 31939.3398961218. The cubic root of 1020121433 is about 1006.6626547774.

Adding to 1020121433 its reverse (3341210201), we get a palindrome (4361331634).

The spelling of 1020121433 in words is "one billion, twenty million, one hundred twenty-one thousand, four hundred thirty-three".