33011221131 has 96 divisors (see below), whose sum is σ = 58429882368. Its totient is φ = 17561396160.

The previous prime is 33011221121. The next prime is 33011221147. The reversal of 33011221131 is 13112211033.

It is not a de Polignac number, because 33011221131 - 2¹⁸ = 33010958987 is a prime.

It is a super-2 number, since 2×33011221131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33011221121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5623660 + ... + 5629526.

It is an arithmetic number, because the mean of its divisors is an integer number (608644608).

Almost surely, 2^33011221131 is an apocalyptic number.

33011221131 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

33011221131 is a deficient number, since it is larger than the sum of its proper divisors (25418661237).

33011221131 is a wasteful number, since it uses less digits than its factorization.

33011221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021 (or 6018 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 33011221131 its reverse (13112211033), we get a palindrome (46123432164).

The spelling of 33011221131 in words is "thirty-three billion, eleven million, two hundred twenty-one thousand, one hundred thirty-one".