1011100100220 has 96 divisors (see below), whose sum is σ = 3595022592000. Its totient is φ = 231108593472.

The previous prime is 1011100100209. The next prime is 1011100100221. The reversal of 1011100100220 is 220010011101.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011100100221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133739620 + ... + 133747179.

It is an arithmetic number, because the mean of its divisors is an integer number (37448152000).

Almost surely, 2^{1011100100220} is an apocalyptic number.

1011100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011100100220 is an abundant number, since it is smaller than the sum of its proper divisors (2583922491780).

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

1011100100220 is a wasteful number, since it uses less digits than its factorization.

1011100100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267486824 (or 267486816 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011100100220 its reverse (220010011101), we get a palindrome (1231110111321).

The spelling of 1011100100220 in words is "one trillion, eleven billion, one hundred million, one hundred thousand, two hundred twenty".