10109101820 has 12 divisors (see below), whose sum is σ = 21229113864. Its totient is φ = 4043640720.

The previous prime is 10109101763. The next prime is 10109101823. The reversal of 10109101820 is 2810190101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10109101823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252727526 + ... + 252727565.

It is an arithmetic number, because the mean of its divisors is an integer number (1769092822).

Almost surely, 2^10109101820 is an apocalyptic number.

10109101820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10109101820 is an abundant number, since it is smaller than the sum of its proper divisors (11120012044).

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

10109101820 is a wasteful number, since it uses less digits than its factorization.

10109101820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505455100 (or 505455098 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 10109101820 its reverse (2810190101), we get a palindrome (12919291921).

The spelling of 10109101820 in words is "ten billion, one hundred nine million, one hundred one thousand, eight hundred twenty".