20121212011201 has 4 divisors (see below), whose sum is σ = 22995670869952. Its totient is φ = 17246753152452.

The previous prime is 20121212011189. The next prime is 20121212011259. The reversal of 20121212011201 is 10211021212102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20121212011201 - 2⁷ = 20121212011073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121212011801) 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, 1437229429365 + ... + 1437229429378.

It is an arithmetic number, because the mean of its divisors is an integer number (5748917717488).

Almost surely, 2^{20121212011201} is an apocalyptic number.

It is an amenable number.

20121212011201 is a deficient number, since it is larger than the sum of its proper divisors (2874458858751).

20121212011201 is an equidigital number, since it uses as much as digits as its factorization.

20121212011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874458858750.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121212011201 its reverse (10211021212102), we get a palindrome (30332233223303).

The spelling of 20121212011201 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, eleven thousand, two hundred one".