2121001003000 has 64 divisors (see below), whose sum is σ = 5414337133920. Its totient is φ = 771273088000.

The previous prime is 2121001002979. The next prime is 2121001003001. The reversal of 2121001003000 is 3001001212.

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 (2121001003001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96398137 + ... + 96420136.

Almost surely, 2^{2121001003000} is an apocalyptic number.

2121001003000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121001003000 is an abundant number, since it is smaller than the sum of its proper divisors (3293336130920).

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

2121001003000 is a wasteful number, since it uses less digits than its factorization.

2121001003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192818305 (or 192818291 counting only the distinct ones).

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

Adding to 2121001003000 its reverse (3001001212), we get a palindrome (2124002004212).

The spelling of 2121001003000 in words is "two trillion, one hundred twenty-one billion, one million, three thousand".