20121033441 has 4 divisors (see below), whose sum is σ = 26828044592. Its totient is φ = 13414022292.

The previous prime is 20121033437. The next prime is 20121033461. The reversal of 20121033441 is 14433012102.

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 not a de Polignac number, because 20121033441 - 2² = 20121033437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121033461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353505571 + ... + 3353505576.

It is an arithmetic number, because the mean of its divisors is an integer number (6707011148).

Almost surely, 2^20121033441 is an apocalyptic number.

It is an amenable number.

20121033441 is a deficient number, since it is larger than the sum of its proper divisors (6707011151).

20121033441 is an equidigital number, since it uses as much as digits as its factorization.

20121033441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707011150.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20121033441 its reverse (14433012102), we get a palindrome (34554045543).

It can be divided in two parts, 20 and 121033441, that added together give a triangular number (121033461 = T₁₅₅₅₈).

The spelling of 20121033441 in words is "twenty billion, one hundred twenty-one million, thirty-three thousand, four hundred forty-one".