1000123021100 has 54 divisors (see below), whose sum is σ = 2524596267060. Its totient is φ = 342899319840.

The previous prime is 1000123021091. The next prime is 1000123021123. The reversal of 1000123021100 is 11203210001.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 102048470 + ... + 102058269.

Almost surely, 2^{1000123021100} is an apocalyptic number.

1000123021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000123021100 is an abundant number, since it is smaller than the sum of its proper divisors (1524473245960).

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

1000123021100 is a wasteful number, since it uses less digits than its factorization.

1000123021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204106767 (or 204106753 counting only the distinct ones).

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

Adding to 1000123021100 its reverse (11203210001), we get a palindrome (1011326231101).

The spelling of 1000123021100 in words is "one trillion, one hundred twenty-three million, twenty-one thousand, one hundred".