10100001220 has 24 divisors (see below), whose sum is σ = 21232439424. Its totient is φ = 4035726816.

The previous prime is 10100001217. The next prime is 10100001227. The reversal of 10100001220 is 2210000101.

It is not an unprimeable number, because it can be changed into a prime (10100001227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247692 + ... + 285571.

It is an arithmetic number, because the mean of its divisors is an integer number (884684976).

Almost surely, 2^10100001220 is an apocalyptic number.

10100001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10100001220 is an abundant number, since it is smaller than the sum of its proper divisors (11132438204).

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

10100001220 is a wasteful number, since it uses less digits than its factorization.

10100001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534219 (or 534217 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10100001220 its reverse (2210000101), we get a palindrome (12310001321).

The spelling of 10100001220 in words is "ten billion, one hundred million, one thousand, two hundred twenty".