21110420350 has 24 divisors (see below), whose sum is σ = 39293578800. Its totient is φ = 8438104320.

The previous prime is 21110420333. The next prime is 21110420431. The reversal of 21110420350 is 5302401112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80947 + ... + 220846.

It is an arithmetic number, because the mean of its divisors is an integer number (1637232450).

Almost surely, 2^21110420350 is an apocalyptic number.

21110420350 is a deficient number, since it is larger than the sum of its proper divisors (18183158450).

21110420350 is a wasteful number, since it uses less digits than its factorization.

21110420350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303204 (or 303199 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21110420350 its reverse (5302401112), we get a palindrome (26412821462).

The spelling of 21110420350 in words is "twenty-one billion, one hundred ten million, four hundred twenty thousand, three hundred fifty".