1211000220003 has 32 divisors (see below), whose sum is σ = 1985913607680. Its totient is φ = 640617269760.

The previous prime is 1211000219987. The next prime is 1211000220077. The reversal of 1211000220003 is 3000220001121.

It is not a de Polignac number, because 1211000220003 - 2⁴ = 1211000219987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211000220803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27782793 + ... + 27826346.

It is an arithmetic number, because the mean of its divisors is an integer number (62059800240).

Almost surely, 2^{1211000220003} is an apocalyptic number.

1211000220003 is a deficient number, since it is larger than the sum of its proper divisors (774913387677).

1211000220003 is a wasteful number, since it uses less digits than its factorization.

1211000220003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55609227.

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

Adding to 1211000220003 its reverse (3000220001121), we get a palindrome (4211220221124).

The spelling of 1211000220003 in words is "one trillion, two hundred eleven billion, two hundred twenty thousand, three".