2121003012 has 48 divisors (see below), whose sum is σ = 5115382272. Its totient is φ = 683293440.

The previous prime is 2121002969. The next prime is 2121003013. The reversal of 2121003012 is 2103001212.

It is a super-3 number, since 3×2121003012³ (a number of 29 digits) contains 333 as substring.

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 (2121003013) 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, 315478 + ... + 322130.

It is an arithmetic number, because the mean of its divisors is an integer number (106570464).

Almost surely, 2^2121003012 is an apocalyptic number.

It is an amenable number.

2121003012 is an abundant number, since it is smaller than the sum of its proper divisors (2994379260).

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

2121003012 is a wasteful number, since it uses less digits than its factorization.

2121003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548 (or 7546 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2121003012 is about 46054.3484591846. The cubic root of 2121003012 is about 1284.8342202623.

Adding to 2121003012 its reverse (2103001212), we get a palindrome (4224004224).

The spelling of 2121003012 in words is "two billion, one hundred twenty-one million, three thousand, twelve".