101020221100 has 36 divisors (see below), whose sum is σ = 226772985600. Its totient is φ = 39014704960.

The previous prime is 101020221077. The next prime is 101020221131. The reversal of 101020221100 is 1122020101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17414380 + ... + 17420179.

It is an arithmetic number, because the mean of its divisors is an integer number (6299249600).

Almost surely, 2^101020221100 is an apocalyptic number.

101020221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101020221100 is an abundant number, since it is smaller than the sum of its proper divisors (125752764500).

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

101020221100 is a wasteful number, since it uses less digits than its factorization.

101020221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34834602 (or 34834595 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101020221100 its reverse (1122020101), we get a palindrome (102142241201).

The spelling of 101020221100 in words is "one hundred one billion, twenty million, two hundred twenty-one thousand, one hundred".