1000021023300 has 144 divisors (see below), whose sum is σ = 3117654610112. Its totient is φ = 246025382400.

The previous prime is 1000021023257. The next prime is 1000021023301. The reversal of 1000021023300 is 33201200001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1000021023301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7212630 + ... + 7349970.

Almost surely, 2^{1000021023300} is an apocalyptic number.

1000021023300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000021023300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558827305056).

1000021023300 is an abundant number, since it is smaller than the sum of its proper divisors (2117633586812).

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

1000021023300 is a wasteful number, since it uses less digits than its factorization.

1000021023300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139238 (or 139231 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 1000021023300 its reverse (33201200001), we get a palindrome (1033222223301).

The spelling of 1000021023300 in words is "one trillion, twenty-one million, twenty-three thousand, three hundred".