21403233110 has 16 divisors (see below), whose sum is σ = 44029508256. Its totient is φ = 7338251328.

The previous prime is 21403233067. The next prime is 21403233143. The reversal of 21403233110 is 1133230412.

It is a super-2 number, since 2×21403233110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152880167 + ... + 152880306.

It is an arithmetic number, because the mean of its divisors is an integer number (2751844266).

Almost surely, 2^21403233110 is an apocalyptic number.

21403233110 is an abundant number, since it is smaller than the sum of its proper divisors (22626275146).

21403233110 is a wasteful number, since it uses less digits than its factorization.

21403233110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305760487.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21403233110 its reverse (1133230412), we get a palindrome (22536463522).

The spelling of 21403233110 in words is "twenty-one billion, four hundred three million, two hundred thirty-three thousand, one hundred ten".