21000002022007 has 2 divisors, whose sum is σ = 21000002022008. Its totient is φ = 21000002022006.

The previous prime is 21000002021983. The next prime is 21000002022059. The reversal of 21000002022007 is 70022020000012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21000002022007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21000009022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500001011003 + 10500001011004.

It is an arithmetic number, because the mean of its divisors is an integer number (10500001011004).

Almost surely, 2^{21000002022007} is an apocalyptic number.

21000002022007 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000002022007 is an equidigital number, since it uses as much as digits as its factorization.

21000002022007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 16.

Adding to 21000002022007 its reverse (70022020000012), we get a palindrome (91022022022019).

The spelling of 21000002022007 in words is "twenty-one trillion, two million, twenty-two thousand, seven".