20121112313033 has 6 divisors (see below), whose sum is σ = 20400519770334. Its totient is φ = 19845480632256.

The previous prime is 20121112313021. The next prime is 20121112313053. The reversal of 20121112313033 is 33031321112102.

It can be written as a sum of positive squares in 3 ways, for example, as 7556412725449 + 12564699587584 = 2748893^2 + 3544672^2 .

It is not a de Polignac number, because 20121112313033 - 2²² = 20121108118729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121112313053) 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, 1887882860 + ... + 1887893517.

It is an arithmetic number, because the mean of its divisors is an integer number (3400086628389).

Almost surely, 2^{20121112313033} is an apocalyptic number.

It is an amenable number.

20121112313033 is a deficient number, since it is larger than the sum of its proper divisors (279407457301).

20121112313033 is an frugal number, since it uses more digits than its factorization.

20121112313033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775776523 (or 3775776450 counting only the distinct ones).

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

Adding to 20121112313033 its reverse (33031321112102), we get a palindrome (53152433425135).

The spelling of 20121112313033 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, three hundred thirteen thousand, thirty-three".