21001300222 has 16 divisors (see below), whose sum is σ = 36011445120. Its totient is φ = 8998253208.

The previous prime is 21001300193. The next prime is 21001300259. The reversal of 21001300222 is 22200310012.

It is a super-2 number, since 2×21001300222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134772 + ... + 245287.

It is an arithmetic number, because the mean of its divisors is an integer number (2250715320).

Almost surely, 2^21001300222 is an apocalyptic number.

21001300222 is a deficient number, since it is larger than the sum of its proper divisors (15010144898).

21001300222 is a wasteful number, since it uses less digits than its factorization.

21001300222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384015.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21001300222 its reverse (22200310012), we get a palindrome (43201610234).

The spelling of 21001300222 in words is "twenty-one billion, one million, three hundred thousand, two hundred twenty-two".