21103443202 has 32 divisors (see below), whose sum is σ = 33523113600. Its totient is φ = 9948624000.

The previous prime is 21103443181. The next prime is 21103443211. The reversal of 21103443202 is 20234430112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496302 + ... + 537142.

It is an arithmetic number, because the mean of its divisors is an integer number (1047597300).

Almost surely, 2^21103443202 is an apocalyptic number.

21103443202 is a deficient number, since it is larger than the sum of its proper divisors (12419670398).

21103443202 is a wasteful number, since it uses less digits than its factorization.

21103443202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41082.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21103443202 its reverse (20234430112), we get a palindrome (41337873314).

The spelling of 21103443202 in words is "twenty-one billion, one hundred three million, four hundred forty-three thousand, two hundred two".