20121411245 has 32 divisors (see below), whose sum is σ = 26236072800. Its totient is φ = 14813939712.

The previous prime is 20121411209. The next prime is 20121411313. The reversal of 20121411245 is 54211412102.

It can be written as a sum of positive squares in 16 ways, for example, as 19022753929 + 1098657316 = 137923^2 + 33146^2 .

It is not a de Polignac number, because 20121411245 - 2³² = 15826443949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20121411245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3875111 + ... + 3880299.

It is an arithmetic number, because the mean of its divisors is an integer number (819877275).

Almost surely, 2^20121411245 is an apocalyptic number.

It is an amenable number.

20121411245 is a deficient number, since it is larger than the sum of its proper divisors (6114661555).

20121411245 is an equidigital number, since it uses as much as digits as its factorization.

20121411245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 20121411245 its reverse (54211412102), we get a palindrome (74332823347).

The spelling of 20121411245 in words is "twenty billion, one hundred twenty-one million, four hundred eleven thousand, two hundred forty-five".