2003121012 has 48 divisors (see below), whose sum is σ = 4840722432. Its totient is φ = 644283360.

The previous prime is 2003121007. The next prime is 2003121049. The reversal of 2003121012 is 2101213002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15033 + ... + 65055.

It is an arithmetic number, because the mean of its divisors is an integer number (100848384).

Almost surely, 2^2003121012 is an apocalyptic number.

It is an amenable number.

2003121012 is an abundant number, since it is smaller than the sum of its proper divisors (2837601420).

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

2003121012 is a wasteful number, since it uses less digits than its factorization.

2003121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50148 (or 50146 counting only the distinct ones).

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

The square root of 2003121012 is about 44756.2399224957. The cubic root of 2003121012 is about 1260.5760807390.

Adding to 2003121012 its reverse (2101213002), we get a palindrome (4104334014).

The spelling of 2003121012 in words is "two billion, three million, one hundred twenty-one thousand, twelve".