33121003131 has 6 divisors (see below), whose sum is σ = 47841448980. Its totient is φ = 22080668748.

The previous prime is 33121003127. The next prime is 33121003133. The reversal of 33121003131 is 13130012133.

It is a happy number.

33121003131 is a `hidden beast` number, since 331 + 21 + 0 + 0 + 313 + 1 = 666.

It is not a de Polignac number, because 33121003131 - 2² = 33121003127 is a prime.

It is a super-2 number, since 2×33121003131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33121003133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1840055721 + ... + 1840055738.

It is an arithmetic number, because the mean of its divisors is an integer number (7973574830).

Almost surely, 2^33121003131 is an apocalyptic number.

33121003131 is a deficient number, since it is larger than the sum of its proper divisors (14720445849).

33121003131 is a wasteful number, since it uses less digits than its factorization.

33121003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680111465 (or 3680111462 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 33121003131 its reverse (13130012133), we get a palindrome (46251015264).

The spelling of 33121003131 in words is "thirty-three billion, one hundred twenty-one million, three thousand, one hundred thirty-one".