1000011002220 has 36 divisors (see below), whose sum is σ = 3033366707280. Its totient is φ = 266669600544.

The previous prime is 1000011002119. The next prime is 1000011002227. The reversal of 1000011002220 is 222001100001.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1000011002220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000011002227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2777808160 + ... + 2777808519.

Almost surely, 2^{1000011002220} is an apocalyptic number.

1000011002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000011002220 is an abundant number, since it is smaller than the sum of its proper divisors (2033355705060).

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

1000011002220 is a wasteful number, since it uses less digits than its factorization.

1000011002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555616694 (or 5555616689 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000011002220 its reverse (222001100001), we get a palindrome (1222012102221).

The spelling of 1000011002220 in words is "one trillion, eleven million, two thousand, two hundred twenty".