20121414245 has 4 divisors (see below), whose sum is σ = 24145697100. Its totient is φ = 16097131392.

The previous prime is 20121414239. The next prime is 20121414293. The reversal of 20121414245 is 54241412102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15888350401 + 4233063844 = 126049^2 + 65062^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121414245 - 2¹² = 20121410149 is a prime.

It is a super-2 number, since 2×20121414245² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012141420 + ... + 2012141429.

It is an arithmetic number, because the mean of its divisors is an integer number (6036424275).

Almost surely, 2^20121414245 is an apocalyptic number.

It is an amenable number.

20121414245 is a deficient number, since it is larger than the sum of its proper divisors (4024282855).

20121414245 is an equidigital number, since it uses as much as digits as its factorization.

20121414245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024282854.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 20121414245 its reverse (54241412102), we get a palindrome (74362826347).

The spelling of 20121414245 in words is "twenty billion, one hundred twenty-one million, four hundred fourteen thousand, two hundred forty-five".