21221141012203 has 16 divisors (see below), whose sum is σ = 24702593212800. Its totient is φ = 18026216642880.

The previous prime is 21221141012161. The next prime is 21221141012221. The reversal of 21221141012203 is 30221014112212.

It is not a de Polignac number, because 21221141012203 - 2¹⁷ = 21221140881131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21221141012243) 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, 695440633 + ... + 695471146.

It is an arithmetic number, because the mean of its divisors is an integer number (1543912075800).

Almost surely, 2^{21221141012203} is an apocalyptic number.

21221141012203 is a deficient number, since it is larger than the sum of its proper divisors (3481452200597).

21221141012203 is a wasteful number, since it uses less digits than its factorization.

21221141012203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390911882.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21221141012203 its reverse (30221014112212), we get a palindrome (51442155124415).

The spelling of 21221141012203 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred forty-one million, twelve thousand, two hundred three".