201222122020111 has 4 divisors (see below), whose sum is σ = 203769237488800. Its totient is φ = 198675006551424.

The previous prime is 201222122020063. The next prime is 201222122020147. The reversal of 201222122020111 is 111020221222102.

201222122020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201222122020111 - 2¹⁵ = 201222121987343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222122020411) 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, 1273557734226 + ... + 1273557734383.

It is an arithmetic number, because the mean of its divisors is an integer number (50942309372200).

Almost surely, 2^{201222122020111} is an apocalyptic number.

201222122020111 is a deficient number, since it is larger than the sum of its proper divisors (2547115468689).

201222122020111 is an equidigital number, since it uses as much as digits as its factorization.

201222122020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547115468688.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201222122020111 its reverse (111020221222102), we get a palindrome (312242343242213).

The spelling of 201222122020111 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty thousand, one hundred eleven".