1100012100220 has 48 divisors (see below), whose sum is σ = 2581491832416. Its totient is φ = 390248192000.

The previous prime is 1100012100203. The next prime is 1100012100233. The reversal of 1100012100220 is 220012100011.

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 = 1100012100197 and 1100012100206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60967261 + ... + 60985300.

It is an arithmetic number, because the mean of its divisors is an integer number (53781079842).

Almost surely, 2^{1100012100220} is an apocalyptic number.

1100012100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100012100220 is an abundant number, since it is smaller than the sum of its proper divisors (1481479732196).

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

1100012100220 is a wasteful number, since it uses less digits than its factorization.

1100012100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121952622 (or 121952620 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1100012100220 its reverse (220012100011), we get a palindrome (1320024200231).

The spelling of 1100012100220 in words is "one trillion, one hundred billion, twelve million, one hundred thousand, two hundred twenty".