33131055021 has 8 divisors (see below), whose sum is σ = 44220237984. Its totient is φ = 22064621040.

The previous prime is 33131054987. The next prime is 33131055101. The reversal of 33131055021 is 12055013133.

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

It is not a de Polignac number, because 33131055021 - 2⁷ = 33131054893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33131054982 and 33131055000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33131065021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5683846 + ... + 5689671.

It is an arithmetic number, because the mean of its divisors is an integer number (5527529748).

Almost surely, 2^33131055021 is an apocalyptic number.

It is an amenable number.

33131055021 is a deficient number, since it is larger than the sum of its proper divisors (11089182963).

33131055021 is a wasteful number, since it uses less digits than its factorization.

33131055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11374491.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 33131055021 its reverse (12055013133), we get a palindrome (45186068154).

The spelling of 33131055021 in words is "thirty-three billion, one hundred thirty-one million, fifty-five thousand, twenty-one".