10120311220 has 12 divisors (see below), whose sum is σ = 21252653604. Its totient is φ = 4048124480.

The previous prime is 10120311203. The next prime is 10120311239. The reversal of 10120311220 is 2211302101.

It can be written as a sum of positive squares in 2 ways, for example, as 3904250256 + 6216060964 = 62484^2 + 78842^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10120311220.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 253007761 + ... + 253007800.

It is an arithmetic number, because the mean of its divisors is an integer number (1771054467).

Almost surely, 2^10120311220 is an apocalyptic number.

10120311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10120311220 is an abundant number, since it is smaller than the sum of its proper divisors (11132342384).

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

10120311220 is a wasteful number, since it uses less digits than its factorization.

10120311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506015570 (or 506015568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10120311220 its reverse (2211302101), we get a palindrome (12331613321).

The spelling of 10120311220 in words is "ten billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty".