21310222101 has 16 divisors (see below), whose sum is σ = 32475498624. Its totient is φ = 12176227584.

The previous prime is 21310222091. The next prime is 21310222111. The reversal of 21310222101 is 10122201312.

It is an interprime number because it is at equal distance from previous prime (21310222091) and next prime (21310222111).

It is not a de Polignac number, because 21310222101 - 2¹¹ = 21310220053 is a prime.

It is a super-3 number, since 3×21310222101³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310222111) 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 15 ways as a sum of consecutive naturals, for example, 255705 + ... + 328641.

It is an arithmetic number, because the mean of its divisors is an integer number (2029718664).

Almost surely, 2^21310222101 is an apocalyptic number.

21310222101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21310222101 is a deficient number, since it is larger than the sum of its proper divisors (11165276523).

21310222101 is a wasteful number, since it uses less digits than its factorization.

21310222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86860.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21310222101 its reverse (10122201312), we get a palindrome (31432423413).

The spelling of 21310222101 in words is "twenty-one billion, three hundred ten million, two hundred twenty-two thousand, one hundred one".