21220220020010 has 32 divisors (see below), whose sum is σ = 42255680137344. Its totient is φ = 7607761336000.

The previous prime is 21220220020009. The next prime is 21220220020019. The reversal of 21220220020010 is 1002002202212.

It is not an unprimeable number, because it can be changed into a prime (21220220020019) 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 15 ways as a sum of consecutive naturals, for example, 1358521001 + ... + 1358536620.

It is an arithmetic number, because the mean of its divisors is an integer number (1320490004292).

Almost surely, 2^{21220220020010} is an apocalyptic number.

21220220020010 is a deficient number, since it is larger than the sum of its proper divisors (21035460117334).

21220220020010 is a wasteful number, since it uses less digits than its factorization.

21220220020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717057710.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21220220020010 its reverse (1002002202212), we get a palindrome (22222222222222).

The spelling of 21220220020010 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty million, twenty thousand, ten".