2011232310221 has 4 divisors (see below), whose sum is σ = 2011323046944. Its totient is φ = 2011141573500.

The previous prime is 2011232310193. The next prime is 2011232310233. The reversal of 2011232310221 is 1220132321102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011232310221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011232310193 and 2011232310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011232300221) 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, 45335105 + ... + 45379446.

It is an arithmetic number, because the mean of its divisors is an integer number (502830761736).

Almost surely, 2^{2011232310221} is an apocalyptic number.

It is an amenable number.

2011232310221 is a deficient number, since it is larger than the sum of its proper divisors (90736723).

2011232310221 is an equidigital number, since it uses as much as digits as its factorization.

2011232310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90736722.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2011232310221 its reverse (1220132321102), we get a palindrome (3231364631323).

The spelling of 2011232310221 in words is "two trillion, eleven billion, two hundred thirty-two million, three hundred ten thousand, two hundred twenty-one".