100011101220 has 96 divisors (see below), whose sum is σ = 311191453440. Its totient is φ = 26665701120.

The previous prime is 100011101207. The next prime is 100011101231. The reversal of 100011101220 is 22101110001.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6926929 + ... + 6941351.

It is an arithmetic number, because the mean of its divisors is an integer number (3241577640).

Almost surely, 2^100011101220 is an apocalyptic number.

100011101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011101220 is an abundant number, since it is smaller than the sum of its proper divisors (211180352220).

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

100011101220 is a wasteful number, since it uses less digits than its factorization.

100011101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27282 (or 27274 counting only the distinct ones).

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

Adding to 100011101220 its reverse (22101110001), we get a palindrome (122112211221).

The spelling of 100011101220 in words is "one hundred billion, eleven million, one hundred one thousand, two hundred twenty".