100011101020 has 48 divisors (see below), whose sum is σ = 219630616128. Its totient is φ = 38182031360.

The previous prime is 100011100979. The next prime is 100011101039. The reversal of 100011101020 is 20101110001.

It is a junction number, because it is equal to n+sod(n) for n = 100011100994 and 100011101012.

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, 23749 + ... + 447868.

It is an arithmetic number, because the mean of its divisors is an integer number (4575637836).

Almost surely, 2^100011101020 is an apocalyptic number.

100011101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011101020 is an abundant number, since it is smaller than the sum of its proper divisors (119619515108).

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

100011101020 is a wasteful number, since it uses less digits than its factorization.

100011101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472110 (or 472108 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 100011101020 its reverse (20101110001), we get a palindrome (120112211021).

The spelling of 100011101020 in words is "one hundred billion, eleven million, one hundred one thousand, twenty".