201222122011 has 16 divisors (see below), whose sum is σ = 203345565696. Its totient is φ = 199111500000.

The previous prime is 201222122009. The next prime is 201222122029. The reversal of 201222122011 is 110221222102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201222122011 - 2¹ = 201222122009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201222122071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66827496 + ... + 66830506.

It is an arithmetic number, because the mean of its divisors is an integer number (12709097856).

Almost surely, 2^201222122011 is an apocalyptic number.

201222122011 is a deficient number, since it is larger than the sum of its proper divisors (2123443685).

201222122011 is a wasteful number, since it uses less digits than its factorization.

201222122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201222122011 its reverse (110221222102), we get a palindrome (311443344113).

The spelling of 201222122011 in words is "two hundred one billion, two hundred twenty-two million, one hundred twenty-two thousand, eleven".