20021200212007 has 2 divisors, whose sum is σ = 20021200212008. Its totient is φ = 20021200212006.

The previous prime is 20021200211989. The next prime is 20021200212037. The reversal of 20021200212007 is 70021200212002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021200212007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021200212037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010600106003 + 10010600106004.

It is an arithmetic number, because the mean of its divisors is an integer number (10010600106004).

Almost surely, 2^{20021200212007} is an apocalyptic number.

20021200212007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021200212007 is an equidigital number, since it uses as much as digits as its factorization.

20021200212007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 20021200212007 its reverse (70021200212002), we get a palindrome (90042400424009).

The spelling of 20021200212007 in words is "twenty trillion, twenty-one billion, two hundred million, two hundred twelve thousand, seven".