231021021211003 has 4 divisors (see below), whose sum is σ = 231021442596240. Its totient is φ = 231020599825768.

The previous prime is 231021021210989. The next prime is 231021021211061. The reversal of 231021021211003 is 300112120120132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231021021211003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231021021211103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209869183 + ... + 210967096.

It is an arithmetic number, because the mean of its divisors is an integer number (57755360649060).

Almost surely, 2^{231021021211003} is an apocalyptic number.

231021021211003 is a deficient number, since it is larger than the sum of its proper divisors (421385237).

231021021211003 is an equidigital number, since it uses as much as digits as its factorization.

231021021211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421385236.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231021021211003 its reverse (300112120120132), we get a palindrome (531133141331135).

The spelling of 231021021211003 in words is "two hundred thirty-one trillion, twenty-one billion, twenty-one million, two hundred eleven thousand, three".