21220323223101 has 32 divisors (see below), whose sum is σ = 29290871720448. Its totient is φ = 13654880570880.

The previous prime is 21220323223051. The next prime is 21220323223109. The reversal of 21220323223101 is 10132232302212.

It is not a de Polignac number, because 21220323223101 - 2¹⁷ = 21220323092029 is a prime.

It is a super-2 number, since 2×21220323223101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220323223109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5495055 + ... + 8522691.

It is an arithmetic number, because the mean of its divisors is an integer number (915339741264).

Almost surely, 2^{21220323223101} is an apocalyptic number.

It is an amenable number.

21220323223101 is a deficient number, since it is larger than the sum of its proper divisors (8070548497347).

21220323223101 is a wasteful number, since it uses less digits than its factorization.

21220323223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028181.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21220323223101 its reverse (10132232302212), we get a palindrome (31352555525313).

The spelling of 21220323223101 in words is "twenty-one trillion, two hundred twenty billion, three hundred twenty-three million, two hundred twenty-three thousand, one hundred one".