33131121442 has 8 divisors (see below), whose sum is σ = 49824438300. Its totient is φ = 16522975344.

The previous prime is 33131121437. The next prime is 33131121451. The reversal of 33131121442 is 24412113133.

It can be written as a sum of positive squares in 2 ways, for example, as 30530223441 + 2600898001 = 174729^2 + 50999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21291717 + ... + 21293272.

Almost surely, 2^33131121442 is an apocalyptic number.

33131121442 is a deficient number, since it is larger than the sum of its proper divisors (16693316858).

33131121442 is a wasteful number, since it uses less digits than its factorization.

33131121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42585380.

The product of its digits is 1728, while the sum is 25.

Adding to 33131121442 its reverse (24412113133), we get a palindrome (57543234575).

The spelling of 33131121442 in words is "thirty-three billion, one hundred thirty-one million, one hundred twenty-one thousand, four hundred forty-two".