2001121203 has 8 divisors (see below), whose sum is σ = 2668393168. Its totient is φ = 1333965024.

The previous prime is 2001121193. The next prime is 2001121217. The reversal of 2001121203 is 3021211002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001121203 - 2⁶ = 2001121139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26625 + ... + 68637.

It is an arithmetic number, because the mean of its divisors is an integer number (333549146).

Almost surely, 2^2001121203 is an apocalyptic number.

2001121203 is a deficient number, since it is larger than the sum of its proper divisors (667271965).

2001121203 is a wasteful number, since it uses less digits than its factorization.

2001121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57893.

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

The square root of 2001121203 is about 44733.8932242656. The cubic root of 2001121203 is about 1260.1564437898.

Adding to 2001121203 its reverse (3021211002), we get a palindrome (5022332205).

It can be divided in two parts, 20011 and 21203, that added together give a palindrome (41214).

The spelling of 2001121203 in words is "two billion, one million, one hundred twenty-one thousand, two hundred three".