101000220100 has 36 divisors (see below), whose sum is σ = 236029748164. Its totient is φ = 37292388480.

The previous prime is 101000220067. The next prime is 101000220103. The reversal of 101000220100 is 1022000101.

It can be written as a sum of positive squares in 6 ways, for example, as 15029288836 + 85970931264 = 122594^2 + 293208^2 .

It is not an unprimeable number, because it can be changed into a prime (101000220103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38844939 + ... + 38847538.

Almost surely, 2^101000220100 is an apocalyptic number.

101000220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101000220100 is an abundant number, since it is smaller than the sum of its proper divisors (135029528064).

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

101000220100 is a wasteful number, since it uses less digits than its factorization.

101000220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77692504 (or 77692497 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 101000220100 its reverse (1022000101), we get a palindrome (102022220201).

The spelling of 101000220100 in words is "one hundred one billion, two hundred twenty thousand, one hundred".