2011121203 has 32 divisors (see below), whose sum is σ = 2571004800. Its totient is φ = 1530095616.

The previous prime is 2011121201. The next prime is 2011121269. The reversal of 2011121203 is 3021211102.

It is not a de Polignac number, because 2011121203 - 2¹ = 2011121201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (2011121201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708475 + ... + 711307.

It is an arithmetic number, because the mean of its divisors is an integer number (80343900).

Almost surely, 2^2011121203 is an apocalyptic number.

2011121203 is a deficient number, since it is larger than the sum of its proper divisors (559883597).

2011121203 is a wasteful number, since it uses less digits than its factorization.

2011121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2011121203 is about 44845.5260087336. The cubic root of 2011121203 is about 1262.2520409415.

Adding to 2011121203 its reverse (3021211102), we get a palindrome (5032332305).

It can be divided in two parts, 20111 and 21203, that added together give a palindrome (41314).

The spelling of 2011121203 in words is "two billion, eleven million, one hundred twenty-one thousand, two hundred three".