10021123100 has 18 divisors (see below), whose sum is σ = 21745837344. Its totient is φ = 4008449200.

The previous prime is 10021123009. The next prime is 10021123103. The reversal of 10021123100 is 132112001.

It is a super-2 number, since 2×10021123100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021123103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50105516 + ... + 50105715.

Almost surely, 2^10021123100 is an apocalyptic number.

10021123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021123100 is an abundant number, since it is smaller than the sum of its proper divisors (11724714244).

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

10021123100 is a wasteful number, since it uses less digits than its factorization.

10021123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100211245 (or 100211238 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10021123100 its reverse (132112001), we get a palindrome (10153235101).

The spelling of 10021123100 in words is "ten billion, twenty-one million, one hundred twenty-three thousand, one hundred".