20121201001219 has 2 divisors, whose sum is σ = 20121201001220. Its totient is φ = 20121201001218.

The previous prime is 20121201001123. The next prime is 20121201001273. The reversal of 20121201001219 is 91210010212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121201001219 - 2¹³ = 20121200993027 is a prime.

It is a super-2 number, since 2×20121201001219² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20121201001219.

It is not a weakly prime, because it can be changed into another prime (20121201001819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060600500609 + 10060600500610.

It is an arithmetic number, because the mean of its divisors is an integer number (10060600500610).

Almost surely, 2^{20121201001219} is an apocalyptic number.

20121201001219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121201001219 is an equidigital number, since it uses as much as digits as its factorization.

20121201001219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 20121201001219 in words is "twenty trillion, one hundred twenty-one billion, two hundred one million, one thousand, two hundred nineteen".