100111211020 has 24 divisors (see below), whose sum is σ = 210579917184. Its totient is φ = 39978508416.

The previous prime is 100111210999. The next prime is 100111211041. The reversal of 100111211020 is 20112111001.

It is an interprime number because it is at equal distance from previous prime (100111210999) and next prime (100111211041).

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 = 100111210988 and 100111211006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4111057 + ... + 4135336.

It is an arithmetic number, because the mean of its divisors is an integer number (8774163216).

Almost surely, 2^100111211020 is an apocalyptic number.

100111211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111211020 is an abundant number, since it is smaller than the sum of its proper divisors (110468706164).

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

100111211020 is a wasteful number, since it uses less digits than its factorization.

100111211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8247009 (or 8247007 counting only the distinct ones).

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

Adding to 100111211020 its reverse (20112111001), we get a palindrome (120223322021).

The spelling of 100111211020 in words is "one hundred billion, one hundred eleven million, two hundred eleven thousand, twenty".