100321000021003 has 32 divisors (see below), whose sum is σ = 104894034739200. Its totient is φ = 95877860069376.

The previous prime is 100321000020991. The next prime is 100321000021049. The reversal of 100321000021003 is 300120000123001.

It is a cyclic number.

It is not a de Polignac number, because 100321000021003 - 2⁵ = 100321000020971 is a prime.

It is a super-2 number, since 2×100321000021003² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100321000021303) 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, 955758838 + ... + 955863796.

It is an arithmetic number, because the mean of its divisors is an integer number (3277938585600).

Almost surely, 2^{100321000021003} is an apocalyptic number.

100321000021003 is a deficient number, since it is larger than the sum of its proper divisors (4573034718197).

100321000021003 is a wasteful number, since it uses less digits than its factorization.

100321000021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107931.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 100321000021003 its reverse (300120000123001), we get a palindrome (400441000144004).

The spelling of 100321000021003 in words is "one hundred trillion, three hundred twenty-one billion, twenty-one thousand, three".