20010103221321 has 32 divisors (see below), whose sum is σ = 30371641171200. Its totient is φ = 13012984920960.

The previous prime is 20010103221313. The next prime is 20010103221343. The reversal of 20010103221321 is 12312230101002.

20010103221321 is a `hidden beast` number, since 2 + 0 + 0 + 10 + 10 + 322 + 1 + 321 = 666.

It is not a de Polignac number, because 20010103221321 - 2³ = 20010103221313 is a prime.

It is a super-2 number, since 2×20010103221321² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010103221294 and 20010103221303.

It is not an unprimeable number, because it can be changed into a prime (20010103221391) 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, 7232835 + ... + 9609063.

It is an arithmetic number, because the mean of its divisors is an integer number (949113786600).

Almost surely, 2^{20010103221321} is an apocalyptic number.

It is an amenable number.

20010103221321 is a deficient number, since it is larger than the sum of its proper divisors (10361537949879).

20010103221321 is a wasteful number, since it uses less digits than its factorization.

20010103221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383886 (or 2383880 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20010103221321 its reverse (12312230101002), we get a palindrome (32322333322323).

The spelling of 20010103221321 in words is "twenty trillion, ten billion, one hundred three million, two hundred twenty-one thousand, three hundred twenty-one".