1100100312220 has 120 divisors (see below), whose sum is σ = 2902401309024. Its totient is φ = 348163417728.

The previous prime is 1100100312197. The next prime is 1100100312221. The reversal of 1100100312220 is 222130010011.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1100100312220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100312221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 256864 + ... + 1505383.

Almost surely, 2^{1100100312220} is an apocalyptic number.

1100100312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100100312220 is an abundant number, since it is smaller than the sum of its proper divisors (1802300996804).

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

1100100312220 is a wasteful number, since it uses less digits than its factorization.

1100100312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762297 (or 1762274 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1100100312220 its reverse (222130010011), we get a palindrome (1322230322231).

The spelling of 1100100312220 in words is "one trillion, one hundred billion, one hundred million, three hundred twelve thousand, two hundred twenty".