21110030310 has 32 divisors (see below), whose sum is σ = 50669908992. Its totient is φ = 5628692960.

The previous prime is 21110030309. The next prime is 21110030317. The reversal of 21110030310 is 1303001112.

It is a super-2 number, since 2×21110030310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110030317) 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, 261025 + ... + 332195.

It is an arithmetic number, because the mean of its divisors is an integer number (1583434656).

Almost surely, 2^21110030310 is an apocalyptic number.

21110030310 is an abundant number, since it is smaller than the sum of its proper divisors (29559878682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110030310 is a wasteful number, since it uses less digits than its factorization.

21110030310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81068.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21110030310 its reverse (1303001112), we get a palindrome (22413031422).

The spelling of 21110030310 in words is "twenty-one billion, one hundred ten million, thirty thousand, three hundred ten".