21110222213 has 16 divisors (see below), whose sum is σ = 22995312000. Its totient is φ = 19303002432.

The previous prime is 21110222197. The next prime is 21110222219. The reversal of 21110222213 is 31222201112.

It is a cyclic number.

It is not a de Polignac number, because 21110222213 - 2⁴ = 21110222197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110222191 and 21110222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110222219) 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, 2512223 + ... + 2520611.

It is an arithmetic number, because the mean of its divisors is an integer number (1437207000).

Almost surely, 2^21110222213 is an apocalyptic number.

It is an amenable number.

21110222213 is a deficient number, since it is larger than the sum of its proper divisors (1885089787).

21110222213 is a wasteful number, since it uses less digits than its factorization.

21110222213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13004.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21110222213 its reverse (31222201112), we get a palindrome (52332423325).

The spelling of 21110222213 in words is "twenty-one billion, one hundred ten million, two hundred twenty-two thousand, two hundred thirteen".