21222302101 has 32 divisors (see below), whose sum is σ = 29733193728. Its totient is φ = 14601090240.

The previous prime is 21222302099. The next prime is 21222302131. The reversal of 21222302101 is 10120322212.

It is a happy number.

It is not a de Polignac number, because 21222302101 - 2¹ = 21222302099 is a prime.

It is a super-2 number, since 2×21222302101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222302131) 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 31 ways as a sum of consecutive naturals, for example, 437871 + ... + 483916.

It is an arithmetic number, because the mean of its divisors is an integer number (929162304).

Almost surely, 2^21222302101 is an apocalyptic number.

It is an amenable number.

21222302101 is a deficient number, since it is larger than the sum of its proper divisors (8510891627).

21222302101 is a wasteful number, since it uses less digits than its factorization.

21222302101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921841.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21222302101 its reverse (10120322212), we get a palindrome (31342624313).

It can be divided in two parts, 21222 and 302101, that added together give a palindrome (323323).

The spelling of 21222302101 in words is "twenty-one billion, two hundred twenty-two million, three hundred two thousand, one hundred one".