201222011021111 has 4 divisors (see below), whose sum is σ = 201527355499800. Its totient is φ = 200916666542424.

The previous prime is 201222011021051. The next prime is 201222011021117. The reversal of 201222011021111 is 111120110222102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201222011021111 - 2³⁴ = 201204831151927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201222011021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222011021117) 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, 152672238356 + ... + 152672239673.

It is an arithmetic number, because the mean of its divisors is an integer number (50381838874950).

Almost surely, 2^{201222011021111} is an apocalyptic number.

201222011021111 is a deficient number, since it is larger than the sum of its proper divisors (305344478689).

201222011021111 is an equidigital number, since it uses as much as digits as its factorization.

201222011021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305344478688.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201222011021111 its reverse (111120110222102), we get a palindrome (312342121243213).

The spelling of 201222011021111 in words is "two hundred one trillion, two hundred twenty-two billion, eleven million, twenty-one thousand, one hundred eleven".