10446321220 has 24 divisors (see below), whose sum is σ = 23091868800. Its totient is φ = 3958605792.

The previous prime is 10446321203. The next prime is 10446321271. The reversal of 10446321220 is 2212364401.

It is a happy number.

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, 13744780 + ... + 13745539.

It is an arithmetic number, because the mean of its divisors is an integer number (962161200).

Almost surely, 2^10446321220 is an apocalyptic number.

10446321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10446321220 is an abundant number, since it is smaller than the sum of its proper divisors (12645547580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10446321220 is a wasteful number, since it uses less digits than its factorization.

10446321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27490347 (or 27490345 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 10446321220 its reverse (2212364401), we get a palindrome (12658685621).

The spelling of 10446321220 in words is "ten billion, four hundred forty-six million, three hundred twenty-one thousand, two hundred twenty".