21103320410 has 16 divisors (see below), whose sum is σ = 39637541376. Its totient is φ = 8074313808.

The previous prime is 21103320383. The next prime is 21103320449. The reversal of 21103320410 is 1402330112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45876554 + ... + 45877013.

It is an arithmetic number, because the mean of its divisors is an integer number (2477346336).

Almost surely, 2^21103320410 is an apocalyptic number.

21103320410 is a deficient number, since it is larger than the sum of its proper divisors (18534220966).

21103320410 is a wasteful number, since it uses less digits than its factorization.

21103320410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91753597.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21103320410 its reverse (1402330112), we get a palindrome (22505650522).

The spelling of 21103320410 in words is "twenty-one billion, one hundred three million, three hundred twenty thousand, four hundred ten".