1000023021200 has 120 divisors (see below), whose sum is σ = 2907293956992. Its totient is φ = 322696488960.

The previous prime is 1000023021187. The next prime is 1000023021211. The reversal of 1000023021200 is 21203200001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10456844 + ... + 10552043.

Almost surely, 2^{1000023021200} is an apocalyptic number.

1000023021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000023021200 is an abundant number, since it is smaller than the sum of its proper divisors (1907270935792).

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

1000023021200 is a wasteful number, since it uses less digits than its factorization.

1000023021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21008929 (or 21008918 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 1000023021200 its reverse (21203200001), we get a palindrome (1021226221201).

The spelling of 1000023021200 in words is "one trillion, twenty-three million, twenty-one thousand, two hundred".