21211310120203 has 8 divisors (see below), whose sum is σ = 24297742056960. Its totient is φ = 18138939377640.

The previous prime is 21211310120197. The next prime is 21211310120213. The reversal of 21211310120203 is 30202101311212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21211310120203 - 2⁴¹ = 19012286864651 is a prime.

It is a super-2 number, since 2×21211310120203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211310120213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515295313 + ... + 3515301346.

It is an arithmetic number, because the mean of its divisors is an integer number (3037217757120).

Almost surely, 2^{21211310120203} is an apocalyptic number.

21211310120203 is a deficient number, since it is larger than the sum of its proper divisors (3086431936757).

21211310120203 is an equidigital number, since it uses as much as digits as its factorization.

21211310120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7030597097.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21211310120203 its reverse (30202101311212), we get a palindrome (51413411431415).

The spelling of 21211310120203 in words is "twenty-one trillion, two hundred eleven billion, three hundred ten million, one hundred twenty thousand, two hundred three".