33012123021131 has 4 divisors (see below), whose sum is σ = 33015767154600. Its totient is φ = 33008478887664.

The previous prime is 33012123021091. The next prime is 33012123021151. The reversal of 33012123021131 is 13112032121033.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33012123021131 is a prime.

It is a super-2 number, since 2×33012123021131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33012123021097 and 33012123021106.

It is not an unprimeable number, because it can be changed into a prime (33012123021151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1822053146 + ... + 1822071263.

It is an arithmetic number, because the mean of its divisors is an integer number (8253941788650).

Almost surely, 2^{33012123021131} is an apocalyptic number.

33012123021131 is a deficient number, since it is larger than the sum of its proper divisors (3644133469).

33012123021131 is an equidigital number, since it uses as much as digits as its factorization.

33012123021131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644133468.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 33012123021131 its reverse (13112032121033), we get a palindrome (46124155142164).

The spelling of 33012123021131 in words is "thirty-three trillion, twelve billion, one hundred twenty-three million, twenty-one thousand, one hundred thirty-one".