21220003101 has 32 divisors (see below), whose sum is σ = 31585749120. Its totient is φ = 12562617600.

The previous prime is 21220003033. The next prime is 21220003117. The reversal of 21220003101 is 10130002212.

It is not a de Polignac number, because 21220003101 - 2¹⁴ = 21219986717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220003151) 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 in 31 ways as a sum of consecutive naturals, for example, 374031 + ... + 427011.

It is an arithmetic number, because the mean of its divisors is an integer number (987054660).

Almost surely, 2^21220003101 is an apocalyptic number.

It is an amenable number.

21220003101 is a deficient number, since it is larger than the sum of its proper divisors (10365746019).

21220003101 is a wasteful number, since it uses less digits than its factorization.

21220003101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53277.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21220003101 its reverse (10130002212), we get a palindrome (31350005313).

The spelling of 21220003101 in words is "twenty-one billion, two hundred twenty million, three thousand, one hundred one".