20001212020019 has 2 divisors, whose sum is σ = 20001212020020. Its totient is φ = 20001212020018.

The previous prime is 20001212019989. The next prime is 20001212020021. The reversal of 20001212020019 is 91002021210002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001212020019 - 2²⁸ = 20000943584563 is a prime.

It is a super-2 number, since 2×20001212020019² (a number of 27 digits) contains 22 as substring.

Together with 20001212020021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20001212025019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000606010009 + 10000606010010.

It is an arithmetic number, because the mean of its divisors is an integer number (10000606010010).

Almost surely, 2^{20001212020019} is an apocalyptic number.

20001212020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001212020019 is an equidigital number, since it uses as much as digits as its factorization.

20001212020019 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 20.

The spelling of 20001212020019 in words is "twenty trillion, one billion, two hundred twelve million, twenty thousand, nineteen".