201022212101 has 4 divisors (see below), whose sum is σ = 201023267532. Its totient is φ = 201021156672.

The previous prime is 201022212043. The next prime is 201022212133. The reversal of 201022212101 is 101212220102.

201022212101 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 101680627876 + 99341584225 = 318874^2 + 315185^2 .

It is a cyclic number.

It is not a de Polignac number, because 201022212101 - 2³⁰ = 199948470277 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 (201022211101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153620 + ... + 652413.

It is an arithmetic number, because the mean of its divisors is an integer number (50255816883).

Almost surely, 2^201022212101 is an apocalyptic number.

It is an amenable number.

201022212101 is a deficient number, since it is larger than the sum of its proper divisors (1055431).

201022212101 is an equidigital number, since it uses as much as digits as its factorization.

201022212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055430.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201022212101 its reverse (101212220102), we get a palindrome (302234432203).

The spelling of 201022212101 in words is "two hundred one billion, twenty-two million, two hundred twelve thousand, one hundred one".