21110030302 has 4 divisors (see below), whose sum is σ = 31665045456. Its totient is φ = 10555015150.

The previous prime is 21110030287. The next prime is 21110030309. The reversal of 21110030302 is 20303001112.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21110030302² (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 (21110030309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277507574 + ... + 5277507577.

It is an arithmetic number, because the mean of its divisors is an integer number (7916261364).

Almost surely, 2^21110030302 is an apocalyptic number.

21110030302 is a deficient number, since it is larger than the sum of its proper divisors (10555015154).

21110030302 is a wasteful number, since it uses less digits than its factorization.

21110030302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555015153.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21110030302 its reverse (20303001112), we get a palindrome (41413031414).

The spelling of 21110030302 in words is "twenty-one billion, one hundred ten million, thirty thousand, three hundred two".