1231003220211 has 48 divisors (see below), whose sum is σ = 1932249265440. Its totient is φ = 752542617600.

The previous prime is 1231003220171. The next prime is 1231003220221. The reversal of 1231003220211 is 1120223001321.

1231003220211 is a `hidden beast` number, since 1 + 231 + 0 + 0 + 3 + 220 + 211 = 666.

It is not a de Polignac number, because 1231003220211 - 2⁶ = 1231003220147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231003220221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 717061 + ... + 1725161.

It is an arithmetic number, because the mean of its divisors is an integer number (40255193030).

Almost surely, 2^{1231003220211} is an apocalyptic number.

1231003220211 is a deficient number, since it is larger than the sum of its proper divisors (701246045229).

1231003220211 is a wasteful number, since it uses less digits than its factorization.

1231003220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008356 (or 1008353 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1231003220211 its reverse (1120223001321), we get a palindrome (2351226221532).

The spelling of 1231003220211 in words is "one trillion, two hundred thirty-one billion, three million, two hundred twenty thousand, two hundred eleven".