221210233011 has 48 divisors (see below), whose sum is σ = 334637503200. Its totient is φ = 146016857088.

The previous prime is 221210233007. The next prime is 221210233021. The reversal of 221210233011 is 110332012122.

221210233011 is a `hidden beast` number, since 221 + 2 + 102 + 330 + 11 = 666.

It is not a de Polignac number, because 221210233011 - 2² = 221210233007 is a prime.

It is a super-2 number, since 2×221210233011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221210233021) 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, 61156675 + ... + 61160291.

It is an arithmetic number, because the mean of its divisors is an integer number (6971614650).

Almost surely, 2^221210233011 is an apocalyptic number.

221210233011 is a deficient number, since it is larger than the sum of its proper divisors (113427270189).

221210233011 is a wasteful number, since it uses less digits than its factorization.

221210233011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050 (or 6038 counting only the distinct ones).

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

Adding to 221210233011 its reverse (110332012122), we get a palindrome (331542245133).

The spelling of 221210233011 in words is "two hundred twenty-one billion, two hundred ten million, two hundred thirty-three thousand, eleven".