10100001221220 has 48 divisors (see below), whose sum is σ = 29255175956160. Its totient is φ = 2600460084096.

The previous prime is 10100001221209. The next prime is 10100001221239. The reversal of 10100001221220 is 2212210000101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10100001221196 and 10100001221205.

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 15 ways as a sum of consecutive naturals, for example, 2902297462 + ... + 2902300941.

It is an arithmetic number, because the mean of its divisors is an integer number (609482832420).

Almost surely, 2^{10100001221220} is an apocalyptic number.

10100001221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10100001221220 is an abundant number, since it is smaller than the sum of its proper divisors (19155174734940).

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

10100001221220 is a wasteful number, since it uses less digits than its factorization.

10100001221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804598444 (or 5804598442 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10100001221220 its reverse (2212210000101), we get a palindrome (12312211221321).

The spelling of 10100001221220 in words is "ten trillion, one hundred billion, one million, two hundred twenty-one thousand, two hundred twenty".