2221123222011 has 32 divisors (see below), whose sum is σ = 3007245552192. Its totient is φ = 1457947054080.

The previous prime is 2221123221949. The next prime is 2221123222037. The reversal of 2221123222011 is 1102223211222.

It is not a de Polignac number, because 2221123222011 - 2²³ = 2221114833403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221123222411) 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, 650781541 + ... + 650784953.

It is an arithmetic number, because the mean of its divisors is an integer number (93976423506).

Almost surely, 2^{2221123222011} is an apocalyptic number.

2221123222011 is a deficient number, since it is larger than the sum of its proper divisors (786122330181).

2221123222011 is a wasteful number, since it uses less digits than its factorization.

2221123222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7743.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2221123222011 its reverse (1102223211222), we get a palindrome (3323346433233).

The spelling of 2221123222011 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-two thousand, eleven".