10001111010220 has 96 divisors (see below), whose sum is σ = 24717104064576. Its totient is φ = 3358258176000.

The previous prime is 10001111010211. The next prime is 10001111010251. The reversal of 10001111010220 is 2201011110001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10001111010197 and 10001111010206.

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 31 ways as a sum of consecutive naturals, for example, 25029081 + ... + 25425520.

It is an arithmetic number, because the mean of its divisors is an integer number (257469834006).

Almost surely, 2^{10001111010220} is an apocalyptic number.

10001111010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001111010220 is an abundant number, since it is smaller than the sum of its proper divisors (14715993054356).

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

10001111010220 is a wasteful number, since it uses less digits than its factorization.

10001111010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50454691 (or 50454689 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10001111010220 its reverse (2201011110001), we get a palindrome (12202122120221).

The spelling of 10001111010220 in words is "ten trillion, one billion, one hundred eleven million, ten thousand, two hundred twenty".