20000021002211 has 4 divisors (see below), whose sum is σ = 20088126821832. Its totient is φ = 19911915182592.

The previous prime is 20000021002207. The next prime is 20000021002229. The reversal of 20000021002211 is 11220012000002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000021002211 - 2² = 20000021002207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000021002192 and 20000021002201.

It is not an unprimeable number, because it can be changed into a prime (20000021082211) 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 in 3 ways as a sum of consecutive naturals, for example, 44052909470 + ... + 44052909923.

It is an arithmetic number, because the mean of its divisors is an integer number (5022031705458).

Almost surely, 2^{20000021002211} is an apocalyptic number.

20000021002211 is a deficient number, since it is larger than the sum of its proper divisors (88105819621).

20000021002211 is an equidigital number, since it uses as much as digits as its factorization.

20000021002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88105819620.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20000021002211 its reverse (11220012000002), we get a palindrome (31220033002213).

The spelling of 20000021002211 in words is "twenty trillion, twenty-one million, two thousand, two hundred eleven".