2103512221801 has 9 divisors (see below), whose sum is σ = 2135475169149. Its totient is φ = 2072020793964.

The previous prime is 2103512221787. The next prime is 2103512221807. The reversal of 2103512221801 is 1081222153012.

The square root of 2103512221801 is 1450349.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2103512221801 - 2⁷ = 2103512221673 is a prime.

It is a super-3 number, since 3×2103512221801³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103512221801.

It is not an unprimeable number, because it can be changed into a prime (2103512221807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 97162560 + ... + 97184206.

Almost surely, 2^{2103512221801} is an apocalyptic number.

2103512221801 is the 1450349-th square number.

2103512221801 is the 725175-th centered octagonal number.

It is an amenable number.

2103512221801 is a deficient number, since it is larger than the sum of its proper divisors (31962947348).

2103512221801 is an frugal number, since it uses more digits than its factorization.

2103512221801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43428 (or 21714 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 2103512221801 its reverse (1081222153012), we get a palindrome (3184734374813).

The spelling of 2103512221801 in words is "two trillion, one hundred three billion, five hundred twelve million, two hundred twenty-one thousand, eight hundred one".