21200020220001 has 8 divisors (see below), whose sum is σ = 32304792716224. Its totient is φ = 12114297268560.

The previous prime is 21200020219979. The next prime is 21200020220003. The reversal of 21200020220001 is 10002202000212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21200020220001 - 2¹⁴ = 21200020203617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200020220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504762386170 + ... + 504762386211.

It is an arithmetic number, because the mean of its divisors is an integer number (4038099089528).

Almost surely, 2^{21200020220001} is an apocalyptic number.

21200020220001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21200020220001 is a deficient number, since it is larger than the sum of its proper divisors (11104772496223).

21200020220001 is a wasteful number, since it uses less digits than its factorization.

21200020220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009524772391.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21200020220001 its reverse (10002202000212), we get a palindrome (31202222220213).

The spelling of 21200020220001 in words is "twenty-one trillion, two hundred billion, twenty million, two hundred twenty thousand, one".