21010222203 has 8 divisors (see below), whose sum is σ = 28015299600. Its totient is φ = 14005979808.

The previous prime is 21010222187. The next prime is 21010222237. The reversal of 21010222203 is 30222201012.

It is a happy number.

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

It is not a de Polignac number, because 21010222203 - 2⁴ = 21010222187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010222273) 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, 147468 + ... + 252521.

It is an arithmetic number, because the mean of its divisors is an integer number (3501912450).

Almost surely, 2^21010222203 is an apocalyptic number.

21010222203 is a deficient number, since it is larger than the sum of its proper divisors (7005077397).

21010222203 is a wasteful number, since it uses less digits than its factorization.

21010222203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417501.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21010222203 its reverse (30222201012), we get a palindrome (51232423215).

The spelling of 21010222203 in words is "twenty-one billion, ten million, two hundred twenty-two thousand, two hundred three".