102000123100 has 18 divisors (see below), whose sum is σ = 221340267344. Its totient is φ = 40800049200.

The previous prime is 102000123077. The next prime is 102000123107. The reversal of 102000123100 is 1321000201.

It is a super-2 number, since 2×102000123100² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000123107) 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, 510000516 + ... + 510000715.

Almost surely, 2^102000123100 is an apocalyptic number.

102000123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102000123100 is an abundant number, since it is smaller than the sum of its proper divisors (119340144244).

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

102000123100 is a wasteful number, since it uses less digits than its factorization.

102000123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020001245 (or 1020001238 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 102000123100 its reverse (1321000201), we get a palindrome (103321123301).

The spelling of 102000123100 in words is "one hundred two billion, one hundred twenty-three thousand, one hundred".