1102020100 has 36 divisors (see below), whose sum is σ = 2401697844. Its totient is φ = 438906880.

The previous prime is 1102020079. The next prime is 1102020109. The reversal of 1102020100 is 10202011.

It can be written as a sum of positive squares in 6 ways, for example, as 172501956 + 929518144 = 13134^2 + 30488^2 .

It is not an unprimeable number, because it can be changed into a prime (1102020109) 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, 349 + ... + 46948.

It is an arithmetic number, because the mean of its divisors is an integer number (66713829).

Almost surely, 2^1102020100 is an apocalyptic number.

1102020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102020100 is an abundant number, since it is smaller than the sum of its proper divisors (1299677744).

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

1102020100 is a wasteful number, since it uses less digits than its factorization.

1102020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47544 (or 47537 counting only the distinct ones).

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

The square root of 1102020100 is about 33196.6880878198. The cubic root of 1102020100 is about 1032.9116408615.

Adding to 1102020100 its reverse (10202011), we get a palindrome (1112222111).

The spelling of 1102020100 in words is "one billion, one hundred two million, twenty thousand, one hundred".