33142021311 has 16 divisors (see below), whose sum is σ = 50512044800. Its totient is φ = 18934579008.

The previous prime is 33142021307. The next prime is 33142021313. The reversal of 33142021311 is 11312024133.

It is not a de Polignac number, because 33142021311 - 2² = 33142021307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33142021313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43606 + ... + 261123.

It is an arithmetic number, because the mean of its divisors is an integer number (3157002800).

Almost surely, 2^33142021311 is an apocalyptic number.

33142021311 is a deficient number, since it is larger than the sum of its proper divisors (17370023489).

33142021311 is a wasteful number, since it uses less digits than its factorization.

33142021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309918.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 33142021311 its reverse (11312024133), we get a palindrome (44454045444).

The spelling of 33142021311 in words is "thirty-three billion, one hundred forty-two million, twenty-one thousand, three hundred eleven".