21003223232101 has 16 divisors (see below), whose sum is σ = 24733249119360. Its totient is φ = 17633890563520.

The previous prime is 21003223232041. The next prime is 21003223232111. The reversal of 21003223232101 is 10123232230012.

It is not a de Polignac number, because 21003223232101 - 2¹¹ = 21003223230053 is a prime.

It is a super-2 number, since 2×21003223232101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003223232111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431314950 + ... + 1431329623.

It is an arithmetic number, because the mean of its divisors is an integer number (1545828069960).

Almost surely, 2^{21003223232101} is an apocalyptic number.

It is an amenable number.

21003223232101 is a deficient number, since it is larger than the sum of its proper divisors (3730025887259).

21003223232101 is a wasteful number, since it uses less digits than its factorization.

21003223232101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862644636.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21003223232101 its reverse (10123232230012), we get a palindrome (31126455462113).

The spelling of 21003223232101 in words is "twenty-one trillion, three billion, two hundred twenty-three million, two hundred thirty-two thousand, one hundred one".