21100222330 has 32 divisors (see below), whose sum is σ = 42016745088. Its totient is φ = 7564737600.

The previous prime is 21100222327. The next prime is 21100222331. The reversal of 21100222330 is 3322200112.

It is not an unprimeable number, because it can be changed into a prime (21100222331) 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, 1343037 + ... + 1358656.

It is an arithmetic number, because the mean of its divisors is an integer number (1313023284).

Almost surely, 2^21100222330 is an apocalyptic number.

21100222330 is a deficient number, since it is larger than the sum of its proper divisors (20916522758).

21100222330 is a wasteful number, since it uses less digits than its factorization.

21100222330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701782.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21100222330 its reverse (3322200112), we get a palindrome (24422422442).

It can be divided in two parts, 211002 and 22330, that added together give a palindrome (233332).

The spelling of 21100222330 in words is "twenty-one billion, one hundred million, two hundred twenty-two thousand, three hundred thirty".