2221220212011 has 24 divisors (see below), whose sum is σ = 3320297330064. Its totient is φ = 1429793052480.

The previous prime is 2221220212009. The next prime is 2221220212033. The reversal of 2221220212011 is 1102120221222.

It is a happy number.

2221220212011 is a `hidden beast` number, since 2 + 221 + 220 + 21 + 201 + 1 = 666.

It is not a de Polignac number, because 2221220212011 - 2¹ = 2221220212009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221220212051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25415656 + ... + 25502901.

It is an arithmetic number, because the mean of its divisors is an integer number (138345722086).

Almost surely, 2^{2221220212011} is an apocalyptic number.

2221220212011 is a deficient number, since it is larger than the sum of its proper divisors (1099077118053).

2221220212011 is a wasteful number, since it uses less digits than its factorization.

2221220212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50918731 (or 50918728 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221220212011 its reverse (1102120221222), we get a palindrome (3323340433233).

The spelling of 2221220212011 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, eleven".