2121301000 has 128 divisors (see below), whose sum is σ = 6109608960. Its totient is φ = 671328000.

The previous prime is 2121300997. The next prime is 2121301033. The reversal of 2121301000 is 1031212.

It is a super-3 number, since 3×2121301000³ (a number of 29 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79345 + ... + 102655.

It is an arithmetic number, because the mean of its divisors is an integer number (47731320).

Almost surely, 2^2121301000 is an apocalyptic number.

2121301000 is a gapful number since it is divisible by the number (20) 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 2121301000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3054804480).

2121301000 is an abundant number, since it is smaller than the sum of its proper divisors (3988307960).

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

2121301000 is a wasteful number, since it uses less digits than its factorization.

2121301000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352 (or 23338 counting only the distinct ones).

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

The square root of 2121301000 is about 46057.5835232375. The cubic root of 2121301000 is about 1284.8943879045.

Adding to 2121301000 its reverse (1031212), we get a palindrome (2122332212).

The spelling of 2121301000 in words is "two billion, one hundred twenty-one million, three hundred one thousand".