210022101 has 24 divisors (see below), whose sum is σ = 312976664. Its totient is φ = 135613440.

The previous prime is 210022079. The next prime is 210022103. The reversal of 210022101 is 101220012.

210022101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 161036100 + 48986001 = 12690^2 + 6999^2 .

It is not a de Polignac number, because 210022101 - 2⁶ = 210022037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78945 + ... + 81561.

Almost surely, 2^210022101 is an apocalyptic number.

It is an amenable number.

210022101 is a deficient number, since it is larger than the sum of its proper divisors (102954563).

210022101 is a wasteful number, since it uses less digits than its factorization.

210022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901 (or 2898 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210022101 is about 14492.1392830734. The cubic root of 210022101 is about 594.4130463892.

Adding to 210022101 its reverse (101220012), we get a palindrome (311242113).

The spelling of 210022101 in words is "two hundred ten million, twenty-two thousand, one hundred one".