201022111020111 has 16 divisors (see below), whose sum is σ = 268876177173504. Its totient is φ = 133591396475744.

The previous prime is 201022111020097. The next prime is 201022111020149. The reversal of 201022111020111 is 111020111220102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201022111020111 - 2¹¹ = 201022111018063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022111021111) 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, 390739930 + ... + 391254056.

It is an arithmetic number, because the mean of its divisors is an integer number (16804761073344).

Almost surely, 2^{201022111020111} is an apocalyptic number.

201022111020111 is a deficient number, since it is larger than the sum of its proper divisors (67854066153393).

201022111020111 is a wasteful number, since it uses less digits than its factorization.

201022111020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925590.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201022111020111 its reverse (111020111220102), we get a palindrome (312042222240213).

The spelling of 201022111020111 in words is "two hundred one trillion, twenty-two billion, one hundred eleven million, twenty thousand, one hundred eleven".