102101211 has 18 divisors (see below), whose sum is σ = 150067580. Its totient is φ = 66893256.

The previous prime is 102101191. The next prime is 102101213. The reversal of 102101211 is 112101201.

It is a happy number.

It is not a de Polignac number, because 102101211 - 2¹¹ = 102099163 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 junction number, because it is equal to n+sod(n) for n = 102101193 and 102101202.

It is not an unprimeable number, because it can be changed into a prime (102101213) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29700 + ... + 32958.

Almost surely, 2^102101211 is an apocalyptic number.

102101211 is a deficient number, since it is larger than the sum of its proper divisors (47966369).

102101211 is an equidigital number, since it uses as much as digits as its factorization.

102101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383 (or 3321 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 102101211 is about 10104.5143871440. The cubic root of 102101211 is about 467.3873613120.

Adding to 102101211 its reverse (112101201), we get a palindrome (214202412).

The spelling of 102101211 in words is "one hundred two million, one hundred one thousand, two hundred eleven".